Intead of generating a case list from a build dEQP executable and
packing it into a gzip file, we can use the Android CTS mustpass
list. This has the benefit of allowing us to remove some failure
expectations for broken tests. It also means we don't need to
ever regenerate our case list files.

Also remove the old dEQP test integration, since it is no longer
supported or possibly even working.

And update our test expectations to match the new Android CTS
must-pass lists.

This change will likely need to be landed simulatanously with a
Chromium-side CL, due to the nature of the gyp/DEPS configuration.

BUG=angleproject:1236

Change-Id: I352e4a651dfb88193a1c4991974502dee1edb67b
Reviewed-on: https://chromium-review.googlesource.com/313792Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>