VectorICs: Remove --vector-stores flag.

src/type-feedback-vector.cc

Index: src/type-feedback-vector.cc
diff --git a/src/type-feedback-vector.cc b/src/type-feedback-vector.cc
index 97d58613e99e452f40099f8f4a2d2d7d43493175..7b7b434f5600154d45b7eba03c37bed8eeb375b7 100644
--- a/src/type-feedback-vector.cc
+++ b/src/type-feedback-vector.cc
@@ -233,13 +233,11 @@ void TypeFeedbackVector::ClearSlotsImpl(SharedFunctionInfo* shared,
           break;
         }
         case FeedbackVectorSlotKind::STORE_IC: {
-          DCHECK(FLAG_vector_stores);
           StoreICNexus nexus(this, slot);
           nexus.Clear(shared->code());
           break;
         }
         case FeedbackVectorSlotKind::KEYED_STORE_IC: {
-          DCHECK(FLAG_vector_stores);
           KeyedStoreICNexus nexus(this, slot);
           nexus.Clear(shared->code());
           break;
@@ -269,7 +267,6 @@ void TypeFeedbackVector::ClearSlotsImpl(SharedFunctionInfo* shared,
 
 // static
 void TypeFeedbackVector::ClearAllKeyedStoreICs(Isolate* isolate) {
-  DCHECK(FLAG_vector_stores);
   SharedFunctionInfo::Iterator iterator(isolate);
   SharedFunctionInfo* shared;
   while ((shared = iterator.Next())) {
@@ -293,7 +290,6 @@ void TypeFeedbackVector::ClearKeyedStoreICs(SharedFunctionInfo* shared) {
     if (kind != FeedbackVectorSlotKind::KEYED_STORE_IC) continue;
     Object* obj = Get(slot);
     if (obj != uninitialized_sentinel) {
-      DCHECK(FLAG_vector_stores);
       KeyedStoreICNexus nexus(this, slot);
       nexus.Clear(host);
     }