Fix test_shell_tests.exe runtime dependency.

TEST=build test_shell_tests only and run.
BUG=none
Review URL: http://codereview.chromium.org/335030

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@30081 0039d316-1c4b-4281-b951-d872f2087c98

webkit/tools/test_shell/test_shell.gyp

@@ -123,10 +123,6 @@
         ['target_arch!="x64"', {
           'dependencies': [
             'npapi_layout_test_plugin',
-          ],
-        }],
-        ['OS!="win" and target_arch!="x64"', {
-          'dependencies': [
             'npapi_test_plugin',
           ],
         }],