Removing mistaken dependency

BUG=none 
TEST=none 

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@56808 0039d316-1c4b-4281-b951-d872f2087c98

chrome/chrome_tests.gypi

@@ -513,7 +513,6 @@
           ],
           'dependencies': [
             'crash_service',  # run time dependency
-            'security_tests',  # run time dependency
             'test_support_common',
             '../google_update/google_update.gyp:google_update',
             '../views/views.gyp:views',