bug fix since --prof did not work

BUG= --prof did not work
TEST=./d8 --prof <insert any test>

Review URL: http://codereview.chromium.org/7331036

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8595 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/d8.cc

@@ -968,8 +968,6 @@ void SourceGroup::WaitForThread() {
 
 
 bool Shell::SetOptions(int argc, char* argv[]) {
-  Locker lock;
-
   for (int i = 0; i < argc; i++) {
     if (strcmp(argv[i], "--stress-opt") == 0) {
       options.stress_opt = true;