DYEBench: CSS parser warning at line 106 of base.css

DYEBench: CSS parser warning at line 106 of base.css
https://bugs.webkit.org/show_bug.cgi?id=133433

Reviewed by Maciej Stachowiak.

Removed the old filter CSS property for Internet Explorer. The latest Internet Explorer supports -ms-linear-gradient
on background CSS property anyways.

It's interesting that some of the tests only have -webkit- prefixes. Perhaps we should update those subtests.

* DoYouEvenBench/Full.html:
* DoYouEvenBench/resources/todomvc/architecture-examples/angularjs/bower_components/todomvc-common/base.css:
(#header:before):
* DoYouEvenBench/resources/todomvc/architecture-examples/backbone/bower_components/todomvc-common/base.css:
(#header:before):
* DoYouEvenBench/resources/todomvc/architecture-examples/emberjs/bower_components/todomvc-common/base.css:
(#header:before):
* DoYouEvenBench/resources/todomvc/architecture-examples/jquery/bower_components/todomvc-common/base.css:
(#header:before):
* DoYouEvenBench/resources/todomvc/dependency-examples/flight/bower_components/todomvc-common/base.css:
(#header:before):
* DoYouEvenBench/resources/todomvc/labs/architecture-examples/react/bower_components/todomvc-common/base.css:
(#header:before):
* DoYouEvenBench/resources/todomvc/vanilla-examples/vanillajs/bower_components/todomvc-common/base.css:
(#header:before):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@169514 268f45cc-cd09-0410-ab3c-d52691b4dbfc