Revert of Vector ICs: platform support for vector-based stores.

src/ic/ia32/access-compiler-ia32.cc

Index: src/ic/ia32/access-compiler-ia32.cc
diff --git a/src/ic/ia32/access-compiler-ia32.cc b/src/ic/ia32/access-compiler-ia32.cc
index acb3526d9d8bb1e2eea157058c6e0564886a5f09..81579e5dc370f12d8511d463c45c2b2235165614 100644
--- a/src/ic/ia32/access-compiler-ia32.cc
+++ b/src/ic/ia32/access-compiler-ia32.cc
@@ -30,8 +30,7 @@
   // receiver, name, scratch1, scratch2, scratch3.
   Register receiver = StoreDescriptor::ReceiverRegister();
   Register name = StoreDescriptor::NameRegister();
-  DCHECK(FLAG_vector_stores ||
-         ebx.is(StoreTransitionDescriptor::MapRegister()));
+  DCHECK(ebx.is(StoreTransitionDescriptor::MapRegister()));
   static Register registers[] = {receiver, name, ebx, edi, no_reg};
   return registers;
 }