Revert of Collect type feedback on result of Math.[round|ceil|floor]

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 9b03e0fc1b513f4ed79a83324eaa878751658101..3cf81f8c5f16228f2fece4935adcfe77e722b446 100644
--- a/src/type-feedback-vector.cc
+++ b/src/type-feedback-vector.cc
@@ -4,7 +4,6 @@
 
 #include "src/v8.h"
 
-#include "src/code-stubs.h"
 #include "src/ic/ic.h"
 #include "src/ic/ic-state.h"
 #include "src/objects.h"
@@ -313,9 +312,7 @@
   Isolate* isolate = GetIsolate();
   Object* feedback = GetFeedback();
   DCHECK(!FLAG_vector_ics ||
-         GetFeedbackExtra() == *vector()->UninitializedSentinel(isolate) ||
-         GetFeedbackExtra() ==
-             Smi::FromInt(CallICStub::kHasReturnedMinusZeroSentinel));
+         GetFeedbackExtra() == *vector()->UninitializedSentinel(isolate));
 
   if (feedback == *vector()->MegamorphicSentinel(isolate)) {
     return GENERIC;
@@ -343,14 +340,6 @@
         GetIsolate()->factory()->NewAllocationSite();
     SetFeedback(*new_site);
   }
-}
-
-
-void CallICNexus::ConfigureMonomorphicMathFunction(
-    Handle<JSFunction> function) {
-  Handle<WeakCell> new_cell = GetIsolate()->factory()->NewWeakCell(function);
-  SetFeedback(*new_cell);
-  SetFeedbackExtra(*vector()->UninitializedSentinel(GetIsolate()));
 }