[Piglit] [PATCH 00/11] Remove duplicated glean tests.

[Matt Turner]

glean contains a number of tests that test things we have coverage
for elsewhere in piglit. It also runs its tests nonconcurrently,
which is kind of not nice. This patch series is by no means
exhaustive or complete. Just a quick pass over glean's glsl1 tests.

Reduces the number of glean tests on my system from 384 -> 262.

It also helps highlight areas of missing test coverage outside
of glean.