Remove old CI script

.github/actions/initbuild/action.yml

@@ -1,39 +0,0 @@
-name: 'Common init'
-
-# WARNING due to https://github.com/actions/runner/issues/646
-# this code can't work - must copy and paste into workflows for now because 'uses' is not supported
-runs:
-  using: "composite"
-  steps:
-    - name: Setup Python
-      uses: actions/setup-python@v2
-      with:
-        python-version: 3.x
-
-    - name: Cache python libs
-      uses: actions/cache@v1
-      id: cache-pip # needed in if test
-      with:
-        path: ~/.cache/pip
-        key: ${{ runner.os }}-pip
-
-    - name: Upgrade python tools
-      # We actually want to run this every time
-      # if: steps.cache-pip.outputs.cache-hit != 'true'
-      run: |
-        python -m pip install --upgrade pip
-        pip install -U platformio meshtastic adafruit-nrfutil
-
-    # Don't cache for now because I want to be lazy with portuino updates githashes
-    # - name: Cache platformio
-    #  uses: actions/cache@v1
-    #  id: cache-platformio # needed in if test
-    #  with:
-    #    path: ~/.platformio
-    #    key: ${{ runner.os }}-platformio
-
-    - name: Upgrade platformio
-      run: |
-        pio upgrade
-
-