chore(lint): Enable Pyflakes rules across all packages

Author: Ayushi Ahjolia

.github/scripts/tests/test_lintcommit.py

@@ -9,7 +9,6 @@
 
 sys.path.insert(0, os.path.dirname(os.path.dirname(__file__)))
 
-import pytest
 from lintcommit import lint_range, validate_message, validate_subject
 
 # region validate_subject: valid subjects