Remove wdiff

Remove wdiff
https://bugs.webkit.org/show_bug.cgi?id=124766

Patch by Daniel Batyai <dbatyai.u-szeged@partner.samsung.com> on 2014-01-13
Reviewed by Ryosuke Niwa.

* Scripts/webkitpy/common/net/resultsjsonparser_unittest.py:
(ResultsJSONParserTest):
* Scripts/webkitpy/layout_tests/controllers/test_result_writer.py:
(TestResultWriter):
(TestResultWriter.create_text_diff_and_write_result):
* Scripts/webkitpy/layout_tests/models/test_run_results.py:
(summarize_results):
* Scripts/webkitpy/layout_tests/run_webkit_tests_integrationtest.py:
(RunTest.test_output_diffs):
* Scripts/webkitpy/port/base.py:
(Port.__init__):
(Port.driver_stop_timeout):
(Port.check_image_diff):
(Port.repository_paths):
(Port._path_to_lighttpd_php):
* Scripts/webkitpy/port/base_unittest.py:
(PortTest.test_default_child_processes):
(PortTest.test_pretty_patch_script_error):
* Scripts/webkitpy/port/port_testcase.py:
(PortTestCase.test_diff_image_crashed):
* Scripts/webkitpy/port/test.py:
(TestPort.operating_system):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@161881 268f45cc-cd09-0410-ab3c-d52691b4dbfc