Rollup merge of #82129 - est31:master, r=jyn514

JohnTitor · web-flow · commit abdfa39f3640 · 2021-02-15T14:21:25.000+09:00
Remove redundant bool_to_option feature gate
diff --git a/compiler/rustc_expand/src/lib.rs b/compiler/rustc_expand/src/lib.rs
@@ -1,4 +1,3 @@
-#![feature(bool_to_option)]
 #![feature(crate_visibility_modifier)]
 #![feature(decl_macro)]
 #![feature(or_patterns)]

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,3 @@`
`1`		`-#![feature(bool_to_option)]`
`2`	`1`	`#![feature(crate_visibility_modifier)]`
`3`	`2`	`#![feature(decl_macro)]`
`4`	`3`	`#![feature(or_patterns)]`