Gerrit git cl upload: Remove --no-squash warning message.

First, it's wrong because of instruction in it is ineffective.
Second, it was also shown during --squash upload, which is completely wrong.

TBR=sergiyb@chromium.org
BUG=611892

Review-Url: https://codereview.chromium.org/2072923002

git_cl.py

@@ -2338,18 +2338,6 @@ class _GerritChangelistImpl(_ChangelistCodereviewBase):
     """Upload the current branch to Gerrit."""
     if options.squash and options.no_squash:
       DieWithError('Can only use one of --squash or --no-squash')
-    # TODO(tandrii): remove this by June 20.
-    if (RunGit(['config', '--bool', 'gerrit.squash-uploads'],
-               error_ok=True).strip() != 'false' and not options.squash and
-        not options.no_squash):
-        print('\n\nHi! You are using git cl upload in --no-squash mode.\n'
-              'Chrome infrastructure wants to make --squash the default.\n'
-              'To ensure that --no-squash is still the default for YOU do:\n'
-              '   git config --bool gerrit.squash-uploads false\n'
-              'See https://goo.gl/dnK2gV (use chromium.org account!) and '
-              'let us know what you think. Thanks!\n'
-              'BUG: http://crbug.com/611892\n\n')
-
     options.squash = ((settings.GetSquashGerritUploads() or options.squash) and
                       not options.no_squash)
 

tests/git_cl_test.py

@@ -765,7 +765,6 @@ class TestGitCl(TestCase):
 
     calls = [
         ((['git', 'config', '--bool', 'gerrit.squash-uploads'],), 'false'),
-        ((['git', 'config', '--bool', 'gerrit.squash-uploads'],), 'false'),
     ]
     # If issue is given, then description is fetched from Gerrit instead.
     if issue is None: