[Web Animations] Remove http/wpt/wk-web-animations tests

[Web Animations] Remove http/wpt/wk-web-animations tests
https://bugs.webkit.org/show_bug.cgi?id=181861

These tests were written early on during our Web Animations implementation before we had a good sense of the quality
of the coverage of the W3C WPT suite. That suite is extremely comprehensive and all of the assertions we wrote ourselves
are redundant and should be removed so that all testing, unless specific to our implementation, is done through the WPT
suite.

Reviewed by Dean Jackson.

* http/wpt/wk-web-animations/interfaces/document-get-animations-expected.txt: Removed.
* http/wpt/wk-web-animations/interfaces/document-get-animations.html: Removed.
* http/wpt/wk-web-animations/interfaces/element-get-animations-expected.txt: Removed.
* http/wpt/wk-web-animations/interfaces/element-get-animations.html: Removed.
* http/wpt/wk-web-animations/interfaces/keyframe-effect-getComputedStyle-expected.txt: Removed.
* http/wpt/wk-web-animations/interfaces/keyframe-effect-getComputedStyle.html: Removed.
* http/wpt/wk-web-animations/timing-model/animation-creation-basic-expected.txt: Removed.
* http/wpt/wk-web-animations/timing-model/animation-creation-basic.html: Removed.
* http/wpt/wk-web-animations/timing-model/animation-current-time-expected.txt: Removed.
* http/wpt/wk-web-animations/timing-model/animation-current-time.html: Removed.
* http/wpt/wk-web-animations/timing-model/animation-effect-expected.txt: Removed.
* http/wpt/wk-web-animations/timing-model/animation-effect-timing-expected.txt: Removed.
* http/wpt/wk-web-animations/timing-model/animation-effect-timing.html: Removed.
* http/wpt/wk-web-animations/timing-model/animation-effect-unique-relationship-expected.txt: Removed.
* http/wpt/wk-web-animations/timing-model/animation-effect-unique-relationship.html: Removed.
* http/wpt/wk-web-animations/timing-model/animation-effect.html: Removed.
* http/wpt/wk-web-animations/timing-model/animation-interface-effect-property-expected.txt: Removed.
* http/wpt/wk-web-animations/timing-model/animation-interface-effect-property.html: Removed.
* http/wpt/wk-web-animations/timing-model/animation-interface-start-time-property-expected.txt: Removed.
* http/wpt/wk-web-animations/timing-model/animation-interface-start-time-property.html: Removed.
* http/wpt/wk-web-animations/timing-model/document-timeline-expected.txt: Removed.
* http/wpt/wk-web-animations/timing-model/document-timeline.html: Removed.
* http/wpt/wk-web-animations/timing-model/keyframe-effect-expected.txt: Removed.
* http/wpt/wk-web-animations/timing-model/keyframe-effect-interface-timing-duration-expected.txt: Removed.
* http/wpt/wk-web-animations/timing-model/keyframe-effect-interface-timing-duration.html: Removed.
* http/wpt/wk-web-animations/timing-model/keyframe-effect.html: Removed.
* http/wpt/wk-web-animations/timing-model/timeline-current-time-expected.txt: Removed.
* http/wpt/wk-web-animations/timing-model/timeline-current-time.html: Removed.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@227210 268f45cc-cd09-0410-ab3c-d52691b4dbfc