Remove redundant method definition

Summary: Fixes a lint error.

Test Plan: Run unit tests.

Reviewers: kylec

Reviewed By: kylec

Subscribers: changesbot, wwu

Differential Revision: https://tails.corp.dropbox.com/D91467

tests/changes/utils/test_categorize.py

@@ -11,11 +11,6 @@ def test_parse_empty_rule(self):
         self.assertEqual(_parse_rule('# foo \n'), None)
         self.assertEqual(_parse_rule(' # foo \n'), None)
 
-    def test_parse_rule(self):
-        self.assertEqual(_parse_rule('tag::regex'), ('tag', '', 'regex'))
-        self.assertEqual(_parse_rule(' tag : proj : regex '), ('tag', 'proj', 'regex'))
-        self.assertEqual(_parse_rule(' tag : proj : regex :: '), ('tag', 'proj', 'regex ::'))
-
     def test_parse_rule(self):
         self.assertEqual(_parse_rule('tag::regex'), ('tag', '', 'regex'))
         self.assertEqual(_parse_rule(' x-fail : proj : test error '),