PPC/s390: [stubs] Port builtin for Array.push fast-case from Crankshaft to TF

src/ppc/code-stubs-ppc.cc

Index: src/ppc/code-stubs-ppc.cc
diff --git a/src/ppc/code-stubs-ppc.cc b/src/ppc/code-stubs-ppc.cc
index 027b7d7d8c464c00bacaea739b81df52ac488783..2fe527992b5c33ba8f929de86b71e9e2fe6eae2e 100644
--- a/src/ppc/code-stubs-ppc.cc
+++ b/src/ppc/code-stubs-ppc.cc
@@ -32,11 +32,6 @@ void ArrayNArgumentsConstructorStub::Generate(MacroAssembler* masm) {
   __ TailCallRuntime(Runtime::kNewArray);
 }
 
-void FastArrayPushStub::InitializeDescriptor(CodeStubDescriptor* descriptor) {
-  Address deopt_handler = Runtime::FunctionForId(Runtime::kArrayPush)->entry;
-  descriptor->Initialize(r3, deopt_handler, -1, JS_FUNCTION_STUB_MODE);
-}
-
 void FastFunctionBindStub::InitializeDescriptor(
     CodeStubDescriptor* descriptor) {
   Address deopt_handler = Runtime::FunctionForId(Runtime::kFunctionBind)->entry;