Remove warning from unexpected pass finder

Removes the warning and associated user prompt about ResultDB not
being rolled out everywhere from the unexpected pass finder script.
ResultDB has been enabled experimentally at 100% for ~2 months now, so
it's safe to say that it's going to be sticking around and the BQ table
data can be trusted.

Bug: 998329
Change-Id: I95fcce6d8c2441d458e1c798ff84cbec7928b693
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2622760
Auto-Submit: Brian Sheedy <bsheedy@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842574}

content/test/gpu/unexpected_pass_finder.py

@@ -153,20 +153,8 @@ def SetLoggingVerbosity(verbosity_level):
   logging.getLogger().setLevel(level)
 
 
-def WarnUserOfIncompleteRollout():
-  response = raw_input('WARNING: This script relies on data from ResultDB, '
-                       'which is not enabled on all builders yet. As such, '
-                       'results from this script should not be trusted yet. '
-                       'Do you want to continue? y/N ')
-  if response.lower() != 'y':
-    sys.exit(0)
-
-
 def main():
   args = ParseArgs()
-  # TODO(crbug.com/1108016): Remove this warning once ResultDB is enabled on all
-  # builders and there is enough data for the results to be trusted.
-  WarnUserOfIncompleteRollout()
   test_expectation_map = expectations.CreateTestExpectationMap(
       args.expectation_file, args.tests)
   ci_builders = builders.GetCiBuilders(