remove simpletests internet test cases due to xss issues

3rdparty/simpletest/test/acceptance_test.php

3rdparty/simpletest/test/adapter_test.php

3rdparty/simpletest/test/all_tests.php

3rdparty/simpletest/test/arguments_test.php

3rdparty/simpletest/test/authentication_test.php

3rdparty/simpletest/test/autorun_test.php

3rdparty/simpletest/test/bad_test_suite.php

3rdparty/simpletest/test/browser_test.php

3rdparty/simpletest/test/collector_test.php

3rdparty/simpletest/test/command_line_test.php

3rdparty/simpletest/test/compatibility_test.php

3rdparty/simpletest/test/cookies_test.php

3rdparty/simpletest/test/detached_test.php

3rdparty/simpletest/test/dumper_test.php

3rdparty/simpletest/test/eclipse_test.php

3rdparty/simpletest/test/encoding_test.php

3rdparty/simpletest/test/errors_test.php

3rdparty/simpletest/test/exceptions_test.php

3rdparty/simpletest/test/expectation_test.php

3rdparty/simpletest/test/form_test.php