Revert of [strong] Implement strong mode restrictions on property access

src/ic/x64/handler-compiler-x64.cc

Index: src/ic/x64/handler-compiler-x64.cc
diff --git a/src/ic/x64/handler-compiler-x64.cc b/src/ic/x64/handler-compiler-x64.cc
index 73fecca6f1ddc16367ba77766ed9a0b0e1ff1d6b..43754c32b15a84c16e56232e1d24092e2170cdf2 100644
--- a/src/ic/x64/handler-compiler-x64.cc
+++ b/src/ic/x64/handler-compiler-x64.cc
@@ -258,39 +258,6 @@
     __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
   }
   __ ret(0);
-}
-
-
-static void LoadIC_PushArgs(MacroAssembler* masm) {
-  Register receiver = LoadDescriptor::ReceiverRegister();
-  Register name = LoadDescriptor::NameRegister();
-
-  DCHECK(!rbx.is(receiver) && !rbx.is(name));
-
-  __ PopReturnAddressTo(rbx);
-  __ Push(receiver);
-  __ Push(name);
-  __ PushReturnAddressFrom(rbx);
-}
-
-
-void NamedLoadHandlerCompiler::GenerateSlow(MacroAssembler* masm) {
-  // Return address is on the stack.
-  LoadIC_PushArgs(masm);
-
-  // Do tail-call to runtime routine.
-  ExternalReference ref(IC_Utility(IC::kLoadIC_Slow), masm->isolate());
-  __ TailCallExternalReference(ref, 2, 1);
-}
-
-
-void ElementHandlerCompiler::GenerateLoadSlow(MacroAssembler* masm) {
-  // Return address is on the stack.
-  LoadIC_PushArgs(masm);
-
-  // Do tail-call to runtime routine.
-  ExternalReference ref(IC_Utility(IC::kKeyedLoadIC_Slow), masm->isolate());
-  __ TailCallExternalReference(ref, 2, 1);
 }