[turbofan] Stub for typeof operator.

src/interpreter/interpreter.h

Index: src/interpreter/interpreter.h
diff --git a/src/interpreter/interpreter.h b/src/interpreter/interpreter.h
index bd9413bd422e6545eb892046ca8c3822a474e444..19f6dfddd8ea4c6001c94b5818862939ca6e78da 100644
--- a/src/interpreter/interpreter.h
+++ b/src/interpreter/interpreter.h
@@ -84,10 +84,6 @@ class Interpreter {
   template <class Generator>
   void DoBinaryOpWithImmediate(InterpreterAssembler* assembler);
 
-  // Generates code to perform the unary operation via |callable| and stores
-  // the result to the accumulator.
-  void DoUnaryOp(Callable callable, InterpreterAssembler* assembler);
-
   // Generates code to perform the unary operation via |Generator|.
   template <class Generator>
   void DoUnaryOp(InterpreterAssembler* assembler);