[presubmit] Remove line

Bug:
Change-Id: Ife9b3eaec3031de1fa4324e345f8e30012ed618a
Reviewed-on: https://chromium-review.googlesource.com/806241
Commit-Queue: Mun Yong Jang <myjang@google.com>
Reviewed-by: Nodir Turakulov <nodir@chromium.org>

presubmit_canned_checks.py

@@ -1315,4 +1315,3 @@ def CheckChangedLUCIConfigs(input_api, output_api):
         out_f = output_api.PresubmitNotifyResult
       outputs.append(out_f('Config validation: %s' % msg['text']))
   return outputs
-

tests/presubmit_unittest.py

@@ -1800,7 +1800,7 @@ class CannedChecksUnittest(PresubmitTestsBase):
       'GetPythonUnitTests', 'GetPylint',
       'GetUnitTests', 'GetUnitTestsInDirectory', 'GetUnitTestsRecursively',
       'CheckCIPDManifest', 'CheckCIPDPackages',
-      'CheckChangedLUCIConfigs', 'CheckChangedConfigs',
+      'CheckChangedLUCIConfigs',
     ]
     # If this test fails, you should add the relevant test.
     self.compareMembers(presubmit_canned_checks, members)