don't test docs and etc

- codestyle test for `etc`, will be handled by `skeleton`
- see: aboutcode-org/skeleton#54

Signed-off-by: keshav-space <keshav6240@gmail.com>

Author: keshav-space

tests/test_codestyle.py

@@ -10,7 +10,7 @@
 
 class BaseTests(unittest.TestCase):
     def test_codestyle(self):
-        args = "venv/bin/black --check -l 100 setup.py etc src tests docs"
+        args = "venv/bin/black --check -l 100 setup.py src tests"
         try:
             subprocess.check_output(args.split())
         except subprocess.CalledProcessError as e:
@@ -19,6 +19,6 @@ def test_codestyle(self):
             print("===========================================================")
             raise Exception(
                 "Black style check failed; please format the code using:\n"
-                "  python -m black -l 100 setup.py etc src tests docs",
+                "  python -m black -l 100 setup.py src tests",
                 e.output,
             ) from e