fix #90187

remove the definition of def_id_no_primitives and change;
 a missing use was modified;
 narrow the Cache accessibility of BadImplStripper;

src/librustdoc/clean/types.rs

@@ -1566,23 +1566,11 @@ impl Type {
 
     /// Use this method to get the [DefId] of a [clean] AST node, including [PrimitiveType]s.
     ///
-    /// See [`Self::def_id_no_primitives`] for more.
-    ///
     /// [clean]: crate::clean
+    ///
     crate fn def_id(&self, cache: &Cache) -> Option<DefId> {
         self.inner_def_id(Some(cache))
     }
-
-    /// Use this method to get the [`DefId`] of a [`clean`] AST node.
-    /// This will return [`None`] when called on a primitive [`clean::Type`].
-    /// Use [`Self::def_id`] if you want to include primitives.
-    ///
-    /// [`clean`]: crate::clean
-    /// [`clean::Type`]: crate::clean::Type
-    // FIXME: get rid of this function and always use `def_id`
-    crate fn def_id_no_primitives(&self) -> Option<DefId> {
-        self.inner_def_id(None)
-    }
 }
 
 /// A primitive (aka, builtin) type.

src/librustdoc/passes/collect_trait_impls.rs

@@ -208,7 +208,7 @@ impl DocVisitor for ItemCollector {
 struct BadImplStripper<'a> {
     prims: FxHashSet<PrimitiveType>,
     items: FxHashSet<ItemId>,
-    crate cache: &'a Cache,
+    cache: &'a Cache,
 }
 
 impl<'a> BadImplStripper<'a> {

src/librustdoc/passes/stripper.rs

@@ -144,7 +144,7 @@ impl<'a> DocFolder for ImplStripper<'a> {
             }
             if let Some(generics) = imp.trait_.as_ref().and_then(|t| t.generics()) {
                 for typaram in generics {
-                    if let Some(did) = typaram.def_id_no_primitives() {
+                    if let Some(did) = typaram.def_id(self.cache) {
                         if did.is_local() && !self.retained.contains(&did.into()) {
                             debug!(
                                 "ImplStripper: stripped item in trait's generics; removing impl"