[ic] [stubs] Remove InlineCacheState field from the code flags.

src/ic/ic.h

Index: src/ic/ic.h
diff --git a/src/ic/ic.h b/src/ic/ic.h
index 85c84746ab6b290edc9e6eca4000f753e234337b..be1aba4939ad32105cd254134a0f5562355d7d29 100644
--- a/src/ic/ic.h
+++ b/src/ic/ic.h
@@ -63,11 +63,6 @@ class IC {
                                              Isolate* isolate,
                                              CacheHolderFlag* flag);
 
-  static bool IsCleared(Code* code) {
-    InlineCacheState state = code->ic_state();
-    return !FLAG_use_ic || state == UNINITIALIZED || state == PREMONOMORPHIC;
-  }
-
   static bool IsCleared(FeedbackNexus* nexus) {
     InlineCacheState state = nexus->StateFromFeedback();
     return !FLAG_use_ic || state == UNINITIALIZED || state == PREMONOMORPHIC;