Revert "allow @:using with Class and Enum (HaxeFoundation#11553)"

This reverts commit a78c614.

src/context/display/displayFields.ml

@@ -99,31 +99,12 @@ let collect_static_extensions ctx items e p =
 	| _ ->
 		let items = loop items ctx.m.module_using in
 		let items = loop items ctx.g.global_using in
-		let rec loop_module_using items t = match follow_without_type t with
-			| TInst(c,_) ->
-				loop items c.cl_using
-			| TEnum(en,_) ->
-				loop items en.e_using
-			| TType(td,tl) ->
-				let items = loop items td.t_using in
-				loop_module_using items (apply_typedef td tl)
-			| TAbstract(a,_) ->
-				loop items a.a_using
-			| TAnon an ->
-				begin match !(an.a_status) with
-					| Statics c ->
-						loop items c.cl_using
-					| EnumStatics en ->
-						loop items en.e_using
-					| AbstractStatics a ->
-						loop items a.a_using
-					| _ ->
-						items
-				end
-			| _ ->
-				items
+		let items = try
+			let mt = module_type_of_type e.etype in
+			loop items (t_infos mt).mt_using
+		with Exit ->
+			items
 		in
-		let items = loop_module_using items e.etype in
 		items
 
 let collect ctx e_ast e dk with_type p =

src/core/tFunctions.ml

@@ -663,13 +663,6 @@ let rec module_type_of_type = function
 		(match r.tm_type with
 		| Some t -> module_type_of_type t
 		| _ -> raise Exit)
-	| TAnon an ->
-		begin match !(an.a_status) with
-			| Statics c -> TClassDecl c
-			| EnumStatics en -> TEnumDecl en
-			| AbstractStatics a -> TAbstractDecl a
-			| _ -> raise Exit
-		end
 	| _ ->
 		raise Exit