It was unused and going forward angle_gpu_info_util will be used
instead.

BUG=angleproject:1874

Change-Id: I262cc36066aa28805d50f3fc4442b08477f9e24d
Reviewed-on: https://chromium-review.googlesource.com/442024Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>