Do not emit receiver map in CheckPrototypes.

src/ia32/stub-cache-ia32.cc

Index: src/ia32/stub-cache-ia32.cc
diff --git a/src/ia32/stub-cache-ia32.cc b/src/ia32/stub-cache-ia32.cc
index 4bc428849ce41f98813106809994d49a88c95843..c790a14e87e538792e5fbd6b58d516a2ccf8cc07 100644
--- a/src/ia32/stub-cache-ia32.cc
+++ b/src/ia32/stub-cache-ia32.cc
@@ -861,9 +861,6 @@ Register StubCompiler::CheckPrototypes(Handle<HeapType> type,
                                        Label* miss,
                                        PrototypeCheckType check) {
   Handle<Map> receiver_map(IC::TypeToMap(*type, isolate()));
-  // Make sure that the type feedback oracle harvests the receiver map.
-  // TODO(svenpanne) Remove this hack when all ICs are reworked.
-  __ mov(scratch1, receiver_map);
 
   // Make sure there's no overlap between holder and object registers.
   ASSERT(!scratch1.is(object_reg) && !scratch1.is(holder_reg));