AST: Remove AssociatedTypeDecl::hasInverseMarking()

Author: slavapestov

include/swift/AST/Decl.h

@@ -3919,10 +3919,6 @@ class AssociatedTypeDecl : public TypeDecl {
         TypeDecl::getOverriddenDecl());
   }
 
-  /// Determine whether this type has ~<target>` stated as
-  /// one of its inherited types.
-  InverseMarking::Mark hasInverseMarking(InvertibleProtocolKind target) const;
-
   /// Retrieve the set of associated types overridden by this associated
   /// type.
   llvm::TinyPtrVector<AssociatedTypeDecl *> getOverriddenDecls() const;

lib/AST/Decl.cpp

@@ -6656,16 +6656,6 @@ findInverseInInheritance(InheritedTypes inherited,
   return inverse;
 }
 
-InverseMarking::Mark
-AssociatedTypeDecl::hasInverseMarking(InvertibleProtocolKind target) const {
-  auto &ctx = getASTContext();
-
-  if (!ctx.LangOpts.hasFeature(Feature::NoncopyableGenerics))
-    return InverseMarking::Mark();
-
-  return findInverseInInheritance(getInherited(), target);
-}
-
 InverseMarking::Mark
 NominalTypeDecl::hasInverseMarking(InvertibleProtocolKind target) const {
   switch (target) {