Remove github action

Signed-off-by: Vincent Coubard <vincent.coubard@arm.com>

.github/workflows/avh.yml

-# This is a basic workflow to help you get started with Actions on CMSIS projects
-
-name: ATS keyword workflow
-
-# Controls when the action will run.
-on:
-  # Triggers the workflow on push or pull request events but only for the main branch
-  push:
-    branches: [ main, test-actions ]
-  pull_request:
-    branches: [ main, test-actions ]
-
-  # Allows you to run this workflow manually from the Actions tab
-  workflow_dispatch:
-
-# A workflow run is made up of one or more jobs that can run sequentially or in parallel
-jobs:
-  # This workflow contains a single job called "ci_build_and_test_ats_keyword"
-  ci_build_and_test_ats_keyword:
-    # The type of runner that the job will run on
-    #runs-on: ubuntu-latest
-    runs-on: self-hosted
-
-    # Steps represent a sequence of tasks that will be executed as part of the job
-    steps:
-      - uses: actions/checkout@v2
-
-      # Cleanup of previous environment
-      - name: Cleanup of self hosted runner environment
-        run : |
-          rm -rf build
-          rm -rf venv
-          rm -rf lib/*
-          git clean -xfd
-          git reset --hard
-
-      # Boostrap the environment
-      - name: Bootstrap environment
-        run : |
-          ./bootstrap.sh
-
-      # Setup python environment
-      - name: Setup Python environment
-        run: |
-          python3 -m venv venv
-          source venv/bin/activate
-          pip3 install click imgtool pytest
-
-      # Execute CMSIS Build command to build the executable for a Cortex-M55 using Arm Compiler
-      - name: Build kws application
-        run : |
-          source venv/bin/activate
-          ./build.sh kws
-
-      # Execute CMSIS Build command to build the executable for a Cortex-M55 using Arm Compiler
-      - name: Build blinky application
-        run : |
-          source venv/bin/activate
-          ./build.sh blinky
-
-      - name: Archive artifacts
-        uses: actions/upload-artifact@v2
-        with:
-          name: binaries
-          path: |
-            ${{ github.workspace }}/build/bootloader/bl2.axf
-            ${{ github.workspace }}/build/secure_partition/tfm_s.axf
-            ${{ github.workspace }}/build/blinky/tfm_ns.axf
-            ${{ github.workspace }}/build/kws/tfm_ns.axf
-
-      - name: Run blinky integration test
-        run : |
-          source venv/bin/activate
-          pytest -s blinky/tests
-
-      - name: Run kws integration test
-        run : |
-          source venv/bin/activate
-          pytest -s kws/tests