Remove a test from threading tests that make them fail on Mac OS.

test/cctest/test-api.cc

Index: test/cctest/test-api.cc
===================================================================
--- test/cctest/test-api.cc	(revision 259)
+++ test/cctest/test-api.cc	(working copy)
@@ -4845,7 +4845,9 @@
 }
 
 
-THREADED_TEST(CatchStackOverflow) {
+// If part of the threaded tests, this test makes ThreadingTest fail
+// on mac.
+TEST(CatchStackOverflow) {
   v8::HandleScope scope;
   LocalContext context;
   v8::TryCatch try_catch;