[ic] Remove a check on FLAG_lazy_feedback_allocation when updating caches

This check shouldn't have been there. Even with lazy feedback allocation
we still transition to pre-monomorphic from uninitialized. We could
remove pre-monomorphic states with lazy-feedback allocation but that
requires changes at several other places.

Change-Id: I8f878a83f0fe3200eb530a34a74811639dcdc153
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1634920Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62138}

src/ic/ic.cc

@@ -648,8 +648,7 @@ void IC::PatchCache(Handle<Name> name, const MaybeObjectHandle& handler) {
 }
 
 void LoadIC::UpdateCaches(LookupIterator* lookup) {
-  if (!FLAG_lazy_feedback_allocation && state() == UNINITIALIZED &&
-      !IsLoadGlobalIC()) {
+  if (state() == UNINITIALIZED && !IsLoadGlobalIC()) {
     // This is the first time we execute this inline cache. Set the target to
     // the pre monomorphic stub to delay setting the monomorphic state.
     TRACE_HANDLER_STATS(isolate(), LoadIC_Premonomorphic);