Remove useless test suite exception

vulkan_content_browsertests does not need an exception to not run on
Linux FYI GPU TSAN Release. It's already excluded.

Bug: 940723
Change-Id: I58ff26b57f5d5fa60ca54627b320149fe4de3d89
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1795983Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Saman Sami <samans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#695199}

testing/buildbot/test_suite_exceptions.pyl

@@ -1653,8 +1653,6 @@
   },
   'vulkan_content_browsertests' : {
     'remove_from': [
-      # Flaky hangs crbug.com/940723
-      'Linux FYI GPU TSAN Release',
       # Vulkan Driver needs updating crbug.com/953535
       'Linux FYI Release (AMD R7 240)',
       'Linux FYI Release (Intel HD 630)',