CI: Remove Python 3.{7,8}

Signed-off-by: Maxime “pep” Buquet <pep@bouah.net>

.gitlab-ci.yml

@@ -3,12 +3,6 @@
 stages:
   - lint
 
-.python-3.7:
-  image: python:3.7
-
-.python-3.8:
-  image: python:3.8
-
 .python-3.9:
   image: python:3.9
 
@@ -34,26 +28,6 @@ stages:
     - mypyc --ignore-missing-imports ./slixmpp_omemo
   allow_failure: true
 
-lint-3.7-pylint:
-  extends:
-    - .python-3.7
-    - .pylint
-
-lint-3.8-pylint:
-  extends:
-    - .python-3.8
-    - .pylint
-
-lint-3.7-mypy:
-  extends:
-    - .python-3.7
-    - .mypy
-
-lint-3.8-mypy:
-  extends:
-    - .python-3.8
-    - .mypy
-
 lint-3.9-pylint:
   extends:
     - .python-3.9