[stubs] Port builtin for Array.push fast-case from Crankshaft to TF

src/runtime/runtime-array.cc

Index: src/runtime/runtime-array.cc
diff --git a/src/runtime/runtime-array.cc b/src/runtime/runtime-array.cc
index 1a2d957cafb83a00561bb7983258b354ac61b0cc..e24486949ec4b5ea470bee092f39fc89693d79fe 100644
--- a/src/runtime/runtime-array.cc
+++ b/src/runtime/runtime-array.cc
@@ -65,12 +65,7 @@ RUNTIME_FUNCTION(Runtime_SpecialArrayFunctions) {
       isolate->factory()->NewJSObject(isolate->object_function());
 
   InstallBuiltin(isolate, holder, "pop", Builtins::kArrayPop);
-  if (FLAG_minimal) {
-    InstallBuiltin(isolate, holder, "push", Builtins::kArrayPush);
-  } else {
-    FastArrayPushStub stub(isolate);
-    InstallCode(isolate, holder, "push", stub.GetCode());
-  }
+  InstallBuiltin(isolate, holder, "push", Builtins::kArrayPush);
   InstallBuiltin(isolate, holder, "shift", Builtins::kArrayShift);
   InstallBuiltin(isolate, holder, "unshift", Builtins::kArrayUnshift);
   InstallBuiltin(isolate, holder, "slice", Builtins::kArraySlice);