Change workflow for linting

.github/workflows/{python-app.yml → lint.yml}

@@ -1,7 +1,7 @@
 # This workflow will install Python dependencies, run tests and lint with a single version of Python
 # For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
 
-name: Python application
+name: Lint workflow
 
 on:
   push:
@@ -26,10 +26,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install flake8 pytest
-        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-        # create .env file with an API Key
-        echo "YT_API_KEY=${{ secrets.YT_API_KEY }}" > .env
+        pip install flake8
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names