delete old workflow, move new ci workflow into proper directory

.github/workflows/pep8.yml

@@ -1,35 +0,0 @@
-name: PEP8 Linting
-
-on: push
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python 3.7
-      uses: actions/setup-python@v1
-      with:
-        python-version: 3.7
-    - name: Install pipenv & sync
-      run: |
-        cd triple-dungeon
-        python -m pip install --upgrade pip
-        pip install pipenv
-        pipenv lock
-        pipenv sync
-    - name: Lint 
-      run: |
-        pip install pycodestyle
-        # PyCharm sets line length at 120 chars
-        pycodestyle . --count --statistics --max-line-length=120
-        
-        # stop the build if there are Python syntax errors or undefined names
-        # flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-        # flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
-#    - name: Test with pytest
-#      run: |
-#        pip install pytest
-#        pytest