Revert "Strict mode ThrowTypeError functions for"

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index befeec23c6ceaf12a28382ec4fc88d99931d359f..d48b871769b4558c9e078f12fac4b2e120a9e497 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -3496,8 +3496,7 @@ void LCodeGen::DoFunctionLiteral(LFunctionLiteral* instr) {
   // space for nested functions that don't need literals cloning.
   Handle<SharedFunctionInfo> shared_info = instr->shared_info();
   bool pretenure = instr->hydrogen()->pretenure();
-  if (!pretenure && shared_info->num_literals() == 0 &&
-      !shared_info->strict_mode()) {
+  if (shared_info->num_literals() == 0 && !pretenure) {
     FastNewClosureStub stub;
     __ Push(shared_info);
     CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);