Revert of Use a WeakCell in the CallIC type vector.

src/code-stubs.cc

Index: src/code-stubs.cc
diff --git a/src/code-stubs.cc b/src/code-stubs.cc
index ecd8ef2d563049b294c2e714bea9cac69704b68e..895569d41357ca34acea2c232dc406044a8cd64d 100644
--- a/src/code-stubs.cc
+++ b/src/code-stubs.cc
@@ -679,9 +679,6 @@
 void CreateAllocationSiteStub::InitializeDescriptor(CodeStubDescriptor* d) {}
 
 
-void CreateWeakCellStub::InitializeDescriptor(CodeStubDescriptor* d) {}
-
-
 void RegExpConstructResultStub::InitializeDescriptor(
     CodeStubDescriptor* descriptor) {
   descriptor->Initialize(
@@ -737,12 +734,6 @@
 
 void CreateAllocationSiteStub::GenerateAheadOfTime(Isolate* isolate) {
   CreateAllocationSiteStub stub(isolate);
-  stub.GetCode();
-}
-
-
-void CreateWeakCellStub::GenerateAheadOfTime(Isolate* isolate) {
-  CreateWeakCellStub stub(isolate);
   stub.GetCode();
 }