ARM: Removed unused StubReturn

src/arm/macro-assembler-arm.h

Index: src/arm/macro-assembler-arm.h
diff --git a/src/arm/macro-assembler-arm.h b/src/arm/macro-assembler-arm.h
index efb782c2ca88d63e65af8297bb8f26dbb9df2c87..41ee2578bfc1a973050cd652e6676362bc202407 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -315,9 +315,6 @@ class MacroAssembler: public Assembler {
   // Call a code stub.
   void TailCallStub(CodeStub* stub, Condition cond = al);
 
-  // Return from a code stub after popping its arguments.
-  void StubReturn(int argc);
-
   // Call a runtime routine.
   // Eventually this should be used for all C calls.
   void CallRuntime(Runtime::Function* f, int num_arguments);