Disable webgl_conformance_vulkan_passthrough_tests on Win10 NVIDIA GTX 1660

Already disabled on other Win NVIDIA bots.

TBR=kbr

Bug: 935060
Change-Id: I586be87c12b26ce4e3ac08b83f6094c4efcc63e4
No-try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1591977
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#655904}