removed ununsed packages"

Author: vonHartz

.github/workflows/install-from-pypi.yml

@@ -20,8 +20,6 @@ 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\
         pip install tensorflow==2.2.0
         pip install ray[rllib,debug]==0.9.0
     - name: Install from PyPI