Removing mypy. We're all consenting adults here. Let's catch these is…

…sues using our IDEs or in PR review. Black catches most of it anyway, #125

.github/workflows/main.yml

@@ -120,7 +120,7 @@ jobs:
 
       - name: Install
         run: |
-          pip install flake8 isort black mypy django-stubs dj_database_url types-six types-requests types-mock
+          pip install flake8 isort black django-stubs dj_database_url types-six types-requests types-mock
           pip install "django-stubs<1.13.0"  # Remove this line once https://github.com/typeddjango/django-stubs/issues/1227 is fixed
           pip install -r requirements_test.txt
           python setup.py develop
@@ -131,5 +131,3 @@ jobs:
         run: python -m isort . --check-only --diff
       - name: Running black
         run: black --check .
-      - name: Running mypy
-        run: mypy .