Remove spurious 'const' that upsets some versions of gcc.

Review URL: http://codereview.chromium.org/115770

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2056 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/ic.cc

@@ -39,7 +39,7 @@ namespace v8 {
 namespace internal {
 
 #ifdef DEBUG
-static const char TransitionMarkFromState(IC::State state) {
+static char TransitionMarkFromState(IC::State state) {
   switch (state) {
     case UNINITIALIZED: return '0';
     case PREMONOMORPHIC: return 'P';