don't check pep8 on old pipeline

.gitlab-ci.yml

@@ -3,18 +3,18 @@ cache:
   paths:
     - .tox
 stages:
-  - check_style
+  # - check_style
   - build
 before_script:
   - pip install tox==2.9.1
-pep8:
-  stage: check_style
-  script:
-    - tox -v -e pep8
-docstyle:
-  stage: check_style
-  script:
-    - tox -v -e docstyle
+# pep8:
+#   stage: check_style
+#   script:
+#     - tox -v -e pep8
+# docstyle:
+#   stage: check_style
+#   script:
+#     - tox -v -e docstyle
 build_image:
   stage: build
   image: 'docker:18.09.7'