test: refactor imports and remove unnecessary code

Author: engineervix

tests/test_cookiecutter_generation.py

@@ -2,10 +2,8 @@
 import re
 
 import pytest
-from cookiecutter.exceptions import FailedHookException
-import sh
-import yaml
 from binaryornot.check import is_binary
+from cookiecutter.exceptions import FailedHookException
 
 PATTERN = r"{{(\s?cookiecutter)[.](.*?)}}"
 RE_OBJ = re.compile(PATTERN)