diff --git a/compiler/rustc_passes/messages.ftl b/compiler/rustc_passes/messages.ftl
index afd08319738df..bba9526048a29 100644
--- a/compiler/rustc_passes/messages.ftl
+++ b/compiler/rustc_passes/messages.ftl
@@ -226,7 +226,6 @@ passes_doc_test_unknown_passes =
     unknown `doc` attribute `{$path}`
     .note = `doc` attribute `{$path}` no longer functions; see issue #44136 <https://github.com/rust-lang/rust/issues/44136>
     .label = no longer functions
-    .help = you may want to use `doc(document_private_items)`
     .no_op_note = `doc({$path})` is now a no-op
 
 passes_doc_test_unknown_plugins =
diff --git a/compiler/rustc_passes/src/errors.rs b/compiler/rustc_passes/src/errors.rs
index 23dcabef1a177..79cc24a51ee11 100644
--- a/compiler/rustc_passes/src/errors.rs
+++ b/compiler/rustc_passes/src/errors.rs
@@ -331,7 +331,6 @@ pub(crate) struct DocTestUnknownSpotlight {
 #[derive(LintDiagnostic)]
 #[diag(passes_doc_test_unknown_passes)]
 #[note]
-#[help]
 #[note(passes_no_op_note)]
 pub(crate) struct DocTestUnknownPasses {
     pub path: String,
diff --git a/compiler/rustc_span/src/symbol.rs b/compiler/rustc_span/src/symbol.rs
index e5108d8b7e921..6b7d17e0daa7a 100644
--- a/compiler/rustc_span/src/symbol.rs
+++ b/compiler/rustc_span/src/symbol.rs
@@ -883,7 +883,6 @@ symbols! {
         doc_primitive,
         doc_spotlight,
         doctest,
-        document_private_items,
         dotdot: "..",
         dotdot_in_tuple_patterns,
         dotdoteq_in_patterns,
diff --git a/src/librustdoc/core.rs b/src/librustdoc/core.rs
index b8aaafcb517a9..86eb0cf8eac85 100644
--- a/src/librustdoc/core.rs
+++ b/src/librustdoc/core.rs
@@ -413,14 +413,6 @@ pub(crate) fn run_global_ctxt(
         );
     }
 
-    // Process all of the crate attributes, extracting plugin metadata along
-    // with the passes which we are supposed to run.
-    for attr in krate.module.attrs.lists(sym::doc) {
-        if attr.is_word() && attr.has_name(sym::document_private_items) {
-            ctxt.render_options.document_private = true;
-        }
-    }
-
     info!("Executing passes");
 
     let mut visited = FxHashMap::default();
diff --git a/tests/rustdoc-ui/deprecated-attrs.rs b/tests/rustdoc-ui/deprecated-attrs.rs
index dcf8a52de41d8..26aaf0d46808f 100644
--- a/tests/rustdoc-ui/deprecated-attrs.rs
+++ b/tests/rustdoc-ui/deprecated-attrs.rs
@@ -4,14 +4,12 @@
 //~^ ERROR unknown `doc` attribute `no_default_passes`
 //~| NOTE no longer functions
 //~| NOTE see issue #44136
-//~| HELP you may want to use `doc(document_private_items)`
 //~| NOTE `doc(no_default_passes)` is now a no-op
 //~| NOTE `#[deny(invalid_doc_attributes)]` on by default
 #![doc(passes = "collapse-docs unindent-comments")]
 //~^ ERROR unknown `doc` attribute `passes`
 //~| NOTE no longer functions
 //~| NOTE see issue #44136
-//~| HELP you may want to use `doc(document_private_items)`
 //~| NOTE `doc(passes)` is now a no-op
 #![doc(plugins = "xxx")]
 //~^ ERROR unknown `doc` attribute `plugins`
diff --git a/tests/rustdoc-ui/deprecated-attrs.stderr b/tests/rustdoc-ui/deprecated-attrs.stderr
index 3e9820522338a..323257f944ce7 100644
--- a/tests/rustdoc-ui/deprecated-attrs.stderr
+++ b/tests/rustdoc-ui/deprecated-attrs.stderr
@@ -10,22 +10,20 @@ LL | #![doc(no_default_passes)]
    |        ^^^^^^^^^^^^^^^^^ no longer functions
    |
    = note: `doc` attribute `no_default_passes` no longer functions; see issue #44136 <https://github.com/rust-lang/rust/issues/44136>
-   = help: you may want to use `doc(document_private_items)`
    = note: `doc(no_default_passes)` is now a no-op
    = note: `#[deny(invalid_doc_attributes)]` on by default
 
 error: unknown `doc` attribute `passes`
-  --> $DIR/deprecated-attrs.rs:10:8
+  --> $DIR/deprecated-attrs.rs:9:8
    |
 LL | #![doc(passes = "collapse-docs unindent-comments")]
    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no longer functions
    |
    = note: `doc` attribute `passes` no longer functions; see issue #44136 <https://github.com/rust-lang/rust/issues/44136>
-   = help: you may want to use `doc(document_private_items)`
    = note: `doc(passes)` is now a no-op
 
 error: unknown `doc` attribute `plugins`
-  --> $DIR/deprecated-attrs.rs:16:8
+  --> $DIR/deprecated-attrs.rs:14:8
    |
 LL | #![doc(plugins = "xxx")]
    |        ^^^^^^^^^^^^^^^ no longer functions