Replace flake8 pre-commit hook with autoflake (#450)

update gitlab-ci

.gitlab-ci.yml

@@ -38,13 +38,13 @@ build:
     paths:
       - ${PRE_COMMIT_HOME}
 
-flake8:
+autoflake:
   extends:
     - .code_changes
     - .pre-commit
   stage: checks
   script:
-    - pre-commit run -a flake8
+    - pre-commit run -a autoflake
 
 format:
   extends:

.pre-commit-config.yaml

@@ -51,7 +51,14 @@ repos:
     rev: 0.7.16
     hooks:
       - id: mdformat
-- repo: https://github.com/PyCQA/flake8
-  rev: 5.0.4
-  hooks:
-      - id: flake8
+-   repo: https://github.com/PyCQA/autoflake
+    rev: v1.7.7
+    hooks:
+    -   id: autoflake
+        args:
+        - --recursive
+        - --expand-star-imports
+        - --remove-all-unused-imports
+        - --remove-duplicate-keys
+        - --remove-unused-variables
+        - --in-place