Sema: Remove NameLookupFlags::IncludeAttributeImplements

Author: slavapestov

lib/Sema/TypeCheckNameLookup.cpp

@@ -308,9 +308,6 @@ LookupResult TypeChecker::lookupMember(DeclContext *dc,
   if (options.contains(NameLookupFlags::ProtocolMembers))
     subOptions |= NL_ProtocolMembers;
 
-  if (options.contains(NameLookupFlags::IncludeAttributeImplements))
-    subOptions |= NL_IncludeAttributeImplements;
-
   // We handle our own overriding/shadowing filtering.
   subOptions &= ~NL_RemoveOverridden;
   subOptions &= ~NL_RemoveNonVisible;

lib/Sema/TypeChecker.h

@@ -199,8 +199,6 @@ enum class NameLookupFlags {
   /// Whether to include results from outside the innermost scope that has a
   /// result.
   IncludeOuterResults = 0x20,
-  /// Whether to consider synonyms declared through @_implements().
-  IncludeAttributeImplements = 0x40,
 };
 
 /// A set of options that control name lookup.