Remove CallFunctionStub, always call through the Call builtin (also from CallIC)

src/globals.h

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index c6c1621b8937171067e944c3093f4cce9dfe46df..42144714ef4bc6ff02942b73b7e886c8b6830ade 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -599,15 +599,6 @@ enum InlineCacheState {
 };
 
 
-enum CallFunctionFlags {
-  NO_CALL_FUNCTION_FLAGS,
-  CALL_AS_METHOD,
-  // Always wrap the receiver and call to the JSFunction. Only use this flag
-  // both the receiver type and the target method are statically known.
-  WRAP_AND_CALL
-};
-
-
 enum CallConstructorFlags {
   NO_CALL_CONSTRUCTOR_FLAGS = 0,
   // The call target is cached in the instruction stream.