Remove --harmony-scoping flag.

src/mips/full-codegen-mips.cc

Index: src/mips/full-codegen-mips.cc
diff --git a/src/mips/full-codegen-mips.cc b/src/mips/full-codegen-mips.cc
index 4b6091c0a1b8f58e08c33ef87b5848474ebd2256..71daeccd6dbdb5cca4c000e3e4149bb486891d7b 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -204,7 +204,7 @@ void FullCodeGenerator::Generate() {
     Comment cmnt(masm_, "[ Allocate context");
     // Argument to NewContext is the function, which is still in a1.
     bool need_write_barrier = true;
-    if (FLAG_harmony_scoping && info->scope()->is_script_scope()) {
+    if (info->scope()->is_script_scope()) {
       __ push(a1);
       __ Push(info->scope()->GetScopeInfo(info->isolate()));
       __ CallRuntime(Runtime::kNewScriptContext, 2);