Delete test-dockerimage.yml

.github/workflows/test-dockerimage.yml

-name: Bor Docker Image CI
-
-on:
-  push:
-    branches: arpit/bor-docker
-  
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Build the Bor Docker image
-      env:
-        DOCKERHUB: ${{ secrets.DOCKERHUB }}
-        DOCKERHUB_KEY: ${{ secrets.DOCKERHUB_KEY }}
-      run: |
-        ls -l
-        echo "Docker login"
-        docker login -u $DOCKERHUB -p $DOCKERHUB_KEY
-        echo "running build"
-        docker build -t maticnetwork/bor:docker-1 .
-        echo "pushing image"
-        docker push maticnetwork/bor:docker-1
-        echo "DONE!"