[assembler] Remove obsolete InvokeBuiltin macro.

src/mips/macro-assembler-mips.h

Index: src/mips/macro-assembler-mips.h
diff --git a/src/mips/macro-assembler-mips.h b/src/mips/macro-assembler-mips.h
index 71825cb557d642cf3bcd73db644436fda5f4fe58..826328f4e0df694e02c090a4aed09471bc7e3af3 100644
--- a/src/mips/macro-assembler-mips.h
+++ b/src/mips/macro-assembler-mips.h
@@ -1328,10 +1328,6 @@ const Operand& rt = Operand(zero_reg), BranchDelaySlot bd = PROTECT
   void JumpToExternalReference(const ExternalReference& builtin,
                                BranchDelaySlot bd = PROTECT);
 
-  // Invoke specified builtin JavaScript function.
-  void InvokeBuiltin(int native_context_index, InvokeFlag flag,
-                     const CallWrapper& call_wrapper = NullCallWrapper());
-
   struct Unresolved {
     int pc;
     uint32_t flags;  // See Bootstrapper::FixupFlags decoders/encoders.