Remove BLACKLIST from check-name-clashes.py, it's wrong nowadays.

src/runtime/runtime.h

 // 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.
 
 #ifndef V8_RUNTIME_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include "src/allocation.h"
 #include "src/objects.h"
 #include "src/zone.h"
@@ skipping 409 matching lines @@
   F(TransitionElementsKind, 2, 1)                      \
   F(HaveSameMap, 2, 1)                                 \
   F(IsJSGlobalProxy, 1, 1)                             \
   F(ForInCacheArrayLength, 2, 1) /* TODO(turbofan): Only temporary */
 
 
 #define RUNTIME_FUNCTION_LIST_ALWAYS_3(F)                    \
   /* String and Regexp */                                    \
   F(NumberToStringRT, 1, 1)                                  \
   F(RegExpConstructResultRT, 3, 1)                           \
-  F(RegExpExecRT, 4, 1)                                      \
   F(StringAddRT, 2, 1)                                       \
   F(SubStringRT, 3, 1)                                       \
   F(InternalizeString, 1, 1)                                 \
   F(StringCompareRT, 2, 1)                                   \
   F(StringCharCodeAtRT, 2, 1)                                \
   F(GetFromCacheRT, 2, 1)                                    \
                                                              \
   /* Compilation */                                          \
   F(CompileLazy, 1, 1)                                       \
   F(CompileOptimized, 2, 1)                                  \
@@ skipping 452 matching lines @@
 
 class DeclareGlobalsEvalFlag : public BitField<bool, 0, 1> {};
 class DeclareGlobalsNativeFlag : public BitField<bool, 1, 1> {};
 STATIC_ASSERT(LANGUAGE_END == 3);
 class DeclareGlobalsLanguageMode : public BitField<LanguageMode, 2, 2> {};
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_