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

src/runtime/runtime-regexp.cc

Index: src/runtime/runtime-regexp.cc
diff --git a/src/runtime/runtime-regexp.cc b/src/runtime/runtime-regexp.cc
index d7df25622a3d3e7b4f43a29286b8f49fd878f80c..c499e3a70abaa90e77f6f5c6dc2454e9b5fc8e96 100644
--- a/src/runtime/runtime-regexp.cc
+++ b/src/runtime/runtime-regexp.cc
@@ -759,7 +759,7 @@ RUNTIME_FUNCTION(Runtime_StringSplit) {
 }
 
 
-RUNTIME_FUNCTION(Runtime_RegExpExecRT) {
+RUNTIME_FUNCTION(Runtime_RegExpExec) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 4);
   CONVERT_ARG_HANDLE_CHECKED(JSRegExp, regexp, 0);
@@ -1110,12 +1110,6 @@ RUNTIME_FUNCTION(Runtime_RegExpExecMultiple) {
 }
 
 
-RUNTIME_FUNCTION(Runtime_RegExpExec) {
-  SealHandleScope shs(isolate);
-  return __RT_impl_Runtime_RegExpExecRT(args, isolate);
-}
-
-
 RUNTIME_FUNCTION(Runtime_IsRegExp) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);