[Sheriff] Mark test-debug/* as flaky on Mac.

Now including release mode.

BUG=v8:3125
LOG=n
TBR=verwaest@chromium.org

Review URL: https://codereview.chromium.org/149623002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18925 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/cctest/cctest.status

@@ -87,7 +87,7 @@
 ['system == macos', {
 
   # BUG(3125).
-  'test-debug/*': [PASS, ['mode == debug', FLAKY]],
+  'test-debug/*': [PASS, FLAKY],
 }],  # 'system == macos'
 
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