git-cl: remove unnecessary similarity notice

This information is redundant when using Gerrit,
and is well known to anyone still using Rietveld.

Change-Id: I03119a84edb67fd20fbe5e2a8e0f0975e69558ed
Reviewed-on: https://chromium-review.googlesource.com/510923
Reviewed-by: Andrew Bonventre <andybons@chromium.org>
Commit-Queue: Aaron Gable <agable@chromium.org>
diff --git a/tests/git_cl_test.py b/tests/git_cl_test.py
index 95d75d1..e9ceb3d 100755
--- a/tests/git_cl_test.py
+++ b/tests/git_cl_test.py
@@ -982,10 +982,7 @@
     self.mock(sys, 'stdout', stdout)
     with self.assertRaises(SystemExitMock):
       git_cl.main(['upload', '--send-mail'])
-    self.assertEqual(
-        'Using 50% similarity for rename/copy detection. Override with '
-        '--similarity.\n',
-        stdout.getvalue())
+    self.assertEqual('', stdout.getvalue())
 
   def test_bug_on_cmd(self):
     self._run_reviewer_test(