Intel driver has released its latest versions, many intel driver bugs are fixed.
This patch cleans up end2end test cases skipped on windows 10 and windows 7.
The test environment is as follows,
Hardware: Skylake(HD 530), Kabylake(HD 630)
Driver version: 4815, 4821
OS: windows 10(15063), windows 7.

BUG=angleproject:2205

Change-Id: Iae14763aa86a572da1221e9ea35b28da2561d3b0
Reviewed-on: https://chromium-review.googlesource.com/729549
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>