Revert of [stubs] Port KeyedLoadIC_Generic stub to TurboFan

src/code-factory.cc

Index: src/code-factory.cc
diff --git a/src/code-factory.cc b/src/code-factory.cc
index df46e4bfdb70636279b3bce5496f63818a1dd14b..018f21d447ea4df27188296ef9777c5f124e2949 100644
--- a/src/code-factory.cc
+++ b/src/code-factory.cc
@@ -82,10 +82,6 @@
 
 // static
 Callable CodeFactory::KeyedLoadIC_Megamorphic(Isolate* isolate) {
-  if (FLAG_tf_load_ic_stub) {
-    return Callable(isolate->builtins()->KeyedLoadIC_Megamorphic_TF(),
-                    LoadWithVectorDescriptor(isolate));
-  }
   return Callable(isolate->builtins()->KeyedLoadIC_Megamorphic(),
                   LoadWithVectorDescriptor(isolate));
 }