Remove some unused CSS rules

src/librustdoc/html/static/css/themes/ayu.css

@@ -119,9 +119,6 @@ pre, .rustdoc.source .example-wrap {
 .content span.traitalias, .content a.traitalias { color: #39AFD7; }
 .content span.keyword, .content a.keyword { color: #39AFD7; }
 
-.content span.externcrate, .content span.mod, .content a.mod {
-	color: #39AFD7;
-}
 .content span.struct, .content a.struct {
 	color: #ffa0a5;
 }
@@ -131,28 +128,19 @@ pre, .rustdoc.source .example-wrap {
 .content span.trait, .content a.trait {
 	color: #39AFD7;
 }
-.content span.type, .content a.type {
-	color: #39AFD7;
-}
 .content span.type,
 .content a.type,
 .block a.current.type { color: #39AFD7; }
-.content span.associatedtype,
-.content a.associatedtype,
-.block a.current.associatedtype { color: #39AFD7; }
-.content span.fn, .content a.fn, .content span.method,
-.content a.method, .content span.tymethod,
-.content a.tymethod, .content .fnname {
-	color: #fdd687;
-}
+.content span.associatedtype, .content a.associatedtype { color: #39AFD7; }
+.content span.fn, .content a.fn,
+.content .fnname { color: #fdd687; }
 .content span.attr, .content a.attr, .content span.derive,
 .content a.derive, .content span.macro, .content a.macro {
 	color: #a37acc;
 }
 
 .sidebar a { color: #53b1db; }
 .sidebar a.current.type { color: #53b1db; }
-.sidebar a.current.associatedtype { color: #53b1db; }
 
 pre.rust .comment { color: #788797; }
 pre.rust .doccomment { color: #a1ac88; }
@@ -290,32 +278,26 @@ individually rather than as a group) */
 /* FIXME: these rules should be at the bottom of the file but currently must be
 above the `@media (max-width: 700px)` rules due to a bug in the css checker */
 /* see https://github.com/rust-lang/rust/pull/71237#issuecomment-618170143 */
-.content span.attr,.content a.attr,.block a.current.attr,.content span.derive,.content a.derive,
-.block a.current.derive,.content span.macro,.content a.macro,.block a.current.macro {}
+.content span.attr, .content a.attr, .block a.current.attr,
+.content span.derive,.content a.derive, .block a.current.derive,
+.content span.macro,.content a.macro,.block a.current.macro {}
 .content span.struct,.content a.struct,.block a.current.struct {}
-#titles>button:hover,#titles>button.selected {}
-.content span.typedef,.content a.typedef,.block a.current.typedef {}
-.content span.union,.content a.union,.block a.current.union {}
+#titles > button:hover, #titles > button.selected {}
+.content span.union, .content a.union, .block a.current.union {}
 pre.rust .lifetime {}
-.stab.unstable {}
-h2,
-h3:not(.impl):not(.method):not(.type):not(.tymethod), h4:not(.method):not(.type):not(.tymethod) {}
-.content span.enum,.content a.enum,.block a.current.enum {}
-.content span.constant,.content a.constant,.block a.current.constant,.content span.static,
+.content span.enum, .content a.enum, .block a.current.enum {}
+.content span.constant, .content a.constant, .block a.current.constant, .content span.static,
 .content a.static, .block a.current.static {}
-.content span.keyword,.content a.keyword,.block a.current.keyword {}
+.content span.keyword, .content a.keyword, .block a.current.keyword {}
 .content span.traitalias,.content a.traitalias,.block a.current.traitalias {}
-.content span.fn,.content a.fn,.block a.current.fn,.content span.method,.content a.method,
-.block a.current.method,.content span.tymethod,.content a.tymethod,.block a.current.tymethod,
-.content .fnname {}
+.content span.fn,.content a.fn,.block a.current.fn, .content .fnname {}
 pre.rust .kw {}
 pre.rust .self,pre.rust .bool-val,pre.rust .prelude-val,pre.rust .attribute {}
 .content span.foreigntype,.content a.foreigntype,.block a.current.foreigntype {}
 .stab.deprecated {}
 .content a.attr,.content a.derive,.content a.macro {}
 .stab.portability {}
 .content span.primitive,.content a.primitive,.block a.current.primitive {}
-.content span.externcrate,.content span.mod,.content a.mod,.block a.current.mod {}
 pre.rust .kw-2,pre.rust .prelude-ty {}
 .content span.trait,.content a.trait,.block a.current.trait {}
 
@@ -353,13 +335,9 @@ a.result-keyword:focus {}
 .sidebar a.current.constant
 .sidebar a.current.static {}
 .sidebar a.current.primitive {}
-.sidebar a.current.externcrate
-.sidebar a.current.mod {}
 .sidebar a.current.trait {}
 .sidebar a.current.traitalias {}
-.sidebar a.current.fn,
-.sidebar a.current.method,
-.sidebar a.current.tymethod {}
+.sidebar a.current.fn {}
 .sidebar a.current.keyword {}
 
 kbd {

src/librustdoc/html/static/css/themes/dark.css

@@ -86,9 +86,7 @@ a.result-keyword:focus { background-color: #884719; }
 .content span.enum, .content a.enum, .block a.current.enum { color: #2dbfb8; }
 .content span.struct, .content a.struct, .block a.current.struct { color: #2dbfb8; }
 .content span.type, .content a.type, .block a.current.type { color: #2dbfb8; }
-.content span.associatedtype,
-.content a.associatedtype,
-.block a.current.associatedtype { color: #D2991D; }
+.content span.associatedtype, .content a.associatedtype { color: #D2991D; }
 .content span.foreigntype, .content a.foreigntype, .block a.current.foreigntype { color: #2dbfb8; }
 .content span.attr, .content a.attr, .block a.current.attr,
 .content span.derive, .content a.derive, .block a.current.derive,
@@ -97,21 +95,16 @@ a.result-keyword:focus { background-color: #884719; }
 .content span.constant, .content a.constant, .block a.current.constant,
 .content span.static, .content a.static, .block a.current.static { color: #D2991D; }
 .content span.primitive, .content a.primitive, .block a.current.primitive { color: #2dbfb8; }
-.content span.externcrate,
-.content span.mod, .content a.mod, .block a.current.mod { color: #D2991D; }
 .content span.trait, .content a.trait, .block a.current.trait { color: #b78cf2; }
 .content span.traitalias, .content a.traitalias, .block a.current.traitalias { color: #b78cf2; }
 .content span.fn, .content a.fn, .block a.current.fn,
-.content span.method, .content a.method, .block a.current.method,
-.content span.tymethod, .content a.tymethod, .block a.current.tymethod,
-.content .fnname{ color: #2BAB63; }
+.content .fnname { color: #2BAB63; }
 .content span.keyword, .content a.keyword, .block a.current.keyword { color: #D2991D; }
 
 .sidebar a { color: #fdbf35; }
 .sidebar a.current.enum { color: #12ece2; }
 .sidebar a.current.struct { color: #12ece2; }
 .sidebar a.current.type { color: #12ece2; }
-.sidebar a.current.associatedtype { color: #fdbf35; }
 .sidebar a.current.foreigntype { color: #12ece2; }
 .sidebar a.current.attr,
 .sidebar a.current.derive,
@@ -120,13 +113,9 @@ a.result-keyword:focus { background-color: #884719; }
 .sidebar a.current.constant
 .sidebar a.current.static { color: #fdbf35; }
 .sidebar a.current.primitive { color: #12ece2; }
-.sidebar a.current.externcrate
-.sidebar a.current.mod { color: #fdbf35; }
 .sidebar a.current.trait { color: #cca7ff; }
 .sidebar a.current.traitalias { color: #cca7ff; }
-.sidebar a.current.fn,
-.sidebar a.current.method,
-.sidebar a.current.tymethod { color: #32d479; }
+.sidebar a.current.fn { color: #32d479; }
 .sidebar a.current.keyword { color: #fdbf35; }
 
 pre.rust .comment { color: #8d8d8b; }

src/librustdoc/html/static/css/themes/light.css

@@ -85,32 +85,25 @@ a.result-keyword:focus { background-color: #afc6e4; }
 .content span.enum, .content a.enum, .block a.current.enum { color: #AD378A; }
 .content span.struct, .content a.struct, .block a.current.struct { color: #AD378A; }
 .content span.type, .content a.type, .block a.current.type { color:  #AD378A; }
+.content span.associatedtype, .content a.associatedtype { color: #3873AD; }
 .content span.foreigntype, .content a.foreigntype, .block a.current.foreigntype { color: #3873AD; }
-.content span.associatedtype,
-.content a.associatedtype,
-.block a.current.associatedtype { color: #3873AD; }
 .content span.attr, .content a.attr, .block a.current.attr,
 .content span.derive, .content a.derive, .block a.current.derive,
 .content span.macro, .content a.macro, .block a.current.macro { color: #068000; }
 .content span.union, .content a.union, .block a.current.union { color: #AD378A; }
 .content span.constant, .content a.constant, .block a.current.constant,
 .content span.static, .content a.static, .block a.current.static { color: #3873AD; }
 .content span.primitive, .content a.primitive, .block a.current.primitive { color: #AD378A; }
-.content span.externcrate,
-.content span.mod, .content a.mod, .block a.current.mod { color: #3873AD; }
 .content span.trait, .content a.trait, .block a.current.trait { color: #6E4FC9; }
 .content span.traitalias, .content a.traitalias, .block a.current.traitalias { color: #5137AD; }
 .content span.fn, .content a.fn, .block a.current.fn,
-.content span.method, .content a.method, .block a.current.method,
-.content span.tymethod, .content a.tymethod, .block a.current.tymethod,
 .content .fnname { color: #AD7C37; }
 .content span.keyword, .content a.keyword, .block a.current.keyword { color: #3873AD; }
 
 .sidebar a { color: #356da4; }
 .sidebar a.current.enum { color: #a63283; }
 .sidebar a.current.struct { color: #a63283; }
 .sidebar a.current.type { color: #a63283; }
-.sidebar a.current.associatedtype { color: #356da4; }
 .sidebar a.current.foreigntype { color: #356da4; }
 .sidebar a.current.attr,
 .sidebar a.current.derive,
@@ -119,13 +112,9 @@ a.result-keyword:focus { background-color: #afc6e4; }
 .sidebar a.current.constant
 .sidebar a.current.static { color: #356da4; }
 .sidebar a.current.primitive { color: #a63283; }
-.sidebar a.current.externcrate
-.sidebar a.current.mod { color: #356da4; }
 .sidebar a.current.trait { color: #6849c3; }
 .sidebar a.current.traitalias { color: #4b349e; }
-.sidebar a.current.fn,
-.sidebar a.current.method,
-.sidebar a.current.tymethod { color: #a67736; }
+.sidebar a.current.fn { color: #a67736; }
 .sidebar a.current.keyword { color: #356da4; }
 
 a {