Remove win8-gtx960-001
Remove win8-gtx960-001

It has a hardware problem

BUG=skia:
TBR=rmistry

Review URL: https://codereview.chromium.org/1464333002

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot