VectorICs: Remove special code to increment call counts by two.

src/type-feedback-vector.h

Index: src/type-feedback-vector.h
diff --git a/src/type-feedback-vector.h b/src/type-feedback-vector.h
index 5b083840f9abf04be7bb6e04736c7838310da225..f4f1f2c1203e0ae3c48c29a4f0c3e5e2b013a615 100644
--- a/src/type-feedback-vector.h
+++ b/src/type-feedback-vector.h
@@ -397,10 +397,6 @@ class FeedbackNexus {
 
 class CallICNexus final : public FeedbackNexus {
  public:
-  // Monomorphic call ics store call counts. Platform code needs to increment
-  // the count appropriately (ie, by 2).
-  static const int kCallCountIncrement = 2;
-
   CallICNexus(Handle<TypeFeedbackVector> vector, FeedbackVectorSlot slot)
       : FeedbackNexus(vector, slot) {
     DCHECK_EQ(FeedbackVectorSlotKind::CALL_IC, vector->GetKind(slot));