Removed manual Digi-Key plug-in installation

- Now in the docker images

.github/workflows/pythonapp.yml

@@ -29,11 +29,6 @@ jobs:
     - uses: actions/checkout@v2
       with:
         submodules: recursive
-    - name: Install dependencies
-      run: |
-        apt-get update
-        apt-get -y install --no-install-recommends python3-inflection python3-requests python3-urllib3 python3-six python3-certifi python3-setuptools python3-openssl python3-tldextract python3-dateutil python3-pip python3-wheel
-        pip3 install git+https://github.com/set-soft/kicost-digikey-api-v3.git
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names