temporary delete github actions

We are currently seeing a lot of misterious github actions failures.
They might be linked to our github actions:

https://github.com/nixos/nixpkgs/actions

.github/workflows/editorconfig.yml

@@ -1,22 +0,0 @@
-name: actions
-
-on:
-  pull_request:
-    branches:
-      - master
-
-jobs:
-  editorconfig:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - uses: technote-space/get-diff-action@v2.0.2
-    - name: editorconfig check
-      env:
-        VERSION: "2.0.4"
-        OS: "linux"
-        ARCH: "amd64"
-      run: |
-        curl -sSf -O -L -C - https://github.com/editorconfig-checker/editorconfig-checker/releases/download/$VERSION/ec-$OS-$ARCH.tar.gz && \
-        tar xzf ec-$OS-$ARCH.tar.gz && \
-        ./bin/ec-$OS-$ARCH -disable-indentation ${{ env.GIT_DIFF }}

.github/workflows/wait-ofborg.yml

@@ -1,31 +0,0 @@
-name: "Wait for ofborg"
-on:
-  pull_request:
-jobs:
-  tests:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Wait for ofborg CI
-      run: |
-        # wait for ~30min...
-        # ..in future a better fix would be to make ofborg mark CI as pending right away.
-        for i in $(seq 360); do
-          res=$(curl --silent \
-            -H "Accept: application/vnd.github.antiope-preview+json" \
-            -H "Authorization: token ${GITHUB_TOKEN}" \
-            "https://api.github.com/repos/NixOS/nixpkgs/commits/${COMMIT}/check-runs" | \
-            jq ".check_runs | map(.app) | map(.id) | contains([${OFBORG_APP_ID}])")
-          if [[ "$res" == "true" ]]; then
-            exit 0
-          fi
-          sleep 5
-          echo "."
-        done
-        echo "Timeout!"
-        exit 1
-      # ofborg is not checking forks.
-      if: github.repository_owner == 'NixOS'
-      env:
-        GITHUB_TOKEN: ${{ github.token }}
-        COMMIT: ${{ github.event.pull_request.head.sha }}
-        OFBORG_APP_ID: 20500