Remove experimental flags that are now required

src/elements-kind.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/elements-kind.h"
 
 #include "src/api.h"
 #include "src/base/lazy-instance.h"
 #include "src/elements.h"
 #include "src/objects.h"
@@ skipping 47 matching lines @@
       ? 0 : (FixedArray::kHeaderSize - kHeapObjectTag);
 }
 
 
 const char* ElementsKindToString(ElementsKind kind) {
   ElementsAccessor* accessor = ElementsAccessor::ForKind(kind);
   return accessor->name();
 }
 
 
-ElementsKind GetInitialFastElementsKind() {
-  if (FLAG_packed_arrays) {
-    return FAST_SMI_ELEMENTS;
-  } else {
-    return FAST_HOLEY_SMI_ELEMENTS;
-  }
-}
-
-
 struct InitializeFastElementsKindSequence {
   static void Construct(
       ElementsKind** fast_elements_kind_sequence_ptr) {
     ElementsKind* fast_elements_kind_sequence =
         new ElementsKind[kFastElementsKindCount];
     *fast_elements_kind_sequence_ptr = fast_elements_kind_sequence;
     STATIC_ASSERT(FAST_SMI_ELEMENTS == FIRST_FAST_ELEMENTS_KIND);
     fast_elements_kind_sequence[0] = FAST_SMI_ELEMENTS;
     fast_elements_kind_sequence[1] = FAST_HOLEY_SMI_ELEMENTS;
     fast_elements_kind_sequence[2] = FAST_DOUBLE_ELEMENTS;
@@ skipping 111 matching lines @@
         return false;
       default:
         return false;
     }
   }
   return false;
 }
 
 
 } }  // namespace v8::internal