Skip CopyTextureTestES3.ES3FloatFormats in Win/Intel/OpenGL. Possibly due to a driver bug. BUG=angleproject:1932 Change-Id: I8b10457681c5635b89f898aab09fa244b3bf7d9c Reviewed-on: https://chromium-review.googlesource.com/616817 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>