[assembler] Remove obsolete InvokeBuiltin macro.

src/ppc/macro-assembler-ppc.h

Index: src/ppc/macro-assembler-ppc.h
diff --git a/src/ppc/macro-assembler-ppc.h b/src/ppc/macro-assembler-ppc.h
index 2c842f828fba943a916f2f9bcc82aed7934e5e6f..7ebc2f90e50cb75f5b4dbb84b8d459773a3834ef 100644
--- a/src/ppc/macro-assembler-ppc.h
+++ b/src/ppc/macro-assembler-ppc.h
@@ -1005,10 +1005,6 @@ class MacroAssembler : public Assembler {
   // Jump to a runtime routine.
   void JumpToExternalReference(const ExternalReference& builtin);
 
-  // Invoke specified builtin JavaScript function.
-  void InvokeBuiltin(int native_context_index, InvokeFlag flag,
-                     const CallWrapper& call_wrapper = NullCallWrapper());
-
   Handle<Object> CodeObject() {
     DCHECK(!code_object_.is_null());
     return code_object_;