[turbofan] Cleanup RawMachineAssembler::Store interface.

test/cctest/compiler/c-signature.h

Index: test/cctest/compiler/c-signature.h
diff --git a/test/cctest/compiler/c-signature.h b/test/cctest/compiler/c-signature.h
index bc0345708e3767ff0f9cb34156e78129d00f85fb..6a17a29856b421254b18ae1c416ad72ff45849c7 100644
--- a/test/cctest/compiler/c-signature.h
+++ b/test/cctest/compiler/c-signature.h
@@ -36,12 +36,6 @@ inline MachineType MachineTypeForC() {
   return kMachAnyTagged;
 }
 
-template <typename T>
-inline StoreRepresentation StoreRepresentationForC(
-    WriteBarrierKind write_barrier_kind) {
-  return StoreRepresentation(MachineTypeForC<T>(), write_barrier_kind);
-}
-
 #define DECLARE_TEMPLATE_SPECIALIZATION(ctype, mtype) \
   template <>                                         \
   inline MachineType MachineTypeForC<ctype>() {       \