Move the last remaining GPU test back to old non *.template pools

The two pools are identical now, so this moves them out of the
temporary *.template pool.

Bug: 812428
Change-Id: Ie385486de9915c8f8de43b6f8ef7c87970bf3d40
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2254667
Commit-Queue: Ben Pastene <bpastene@chromium.org>
Commit-Queue: Brian Sheedy <bsheedy@chromium.org>
Auto-Submit: Ben Pastene <bpastene@chromium.org>
Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#780434}

testing/buildbot/test_suite_exceptions.pyl

@@ -1109,7 +1109,7 @@
             {
               'gpu': '10de:1cb3',
               'os': 'Ubuntu',
-              'pool': 'chromium.tests.gpu.template',
+              'pool': 'chromium.tests.gpu',
             },
           ],
         },
@@ -1124,7 +1124,7 @@
             {
               'gpu': '10de:1cb3',
               'os': 'Ubuntu',
-              'pool': 'chromium.tests.gpu.template',
+              'pool': 'chromium.tests.gpu',
             },
           ],
         },
@@ -1139,7 +1139,7 @@
             {
               'gpu': '10de:1cb3',
               'os': 'Ubuntu',
-              'pool': 'chromium.tests.gpu.template',
+              'pool': 'chromium.tests.gpu',
             },
           ],
         },