patch-check: remove duplicated words in subject length check

Change-Id: I8c35facb077b7c7b80784699580f93cb58ae0903
Bug: b:185520494
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index fb6f32d..58be26d 100644
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -61,7 +61,7 @@
                   stdout) and (len(stdout) - 1) > _GIT_COMMIT_SUBJECT_LENGTH:
     failure_msg = (
         "The commit subject: %s is too long (%d chars)\n"
-        "Try to keep this to 50 or lessor less (up to 65 is permitted for "
+        "Try to keep this to 50 or less (up to 65 is permitted for "
         "non-reverts).\n"
         "https://www.git-scm.com/book/en/v2/Distributed-Git-Contributing-to-a-"
         "Project#_commit_guidelines") % (stdout, len(stdout) - 1)