Remove wptrunner from old location in preperation for subtree import
Bug 945222 - Update web-platform-tests expected data to revision 230dc8d4c3f81b3007165e6e8279fe7adc8f9778

--HG--
rename : testing/web-platform-tests/metadata/workers/semantics/multiple-workers/002.html.ini => testing/web-platform-tests/metadata/webmessaging/with-ports/021.html.ini
Squashed 'testing/web-platform-tests/harness/' content from commit c203d52

git-subtree-dir: testing/web-platform-tests/harness
git-subtree-split: c203d52570148a3359e8f48591fe0333a29061c2