remove invalid site checking workflow

.github/workflows/site-checks.yml

@@ -1,41 +0,0 @@
-name: Site checker
-
-on:
-  schedule:
-    - cron: "0 * * * *"
-  push:
-    branches: [ master, feature-ci ]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v3
-    - name: Use Node.js 10.x
-      uses: actions/setup-node@v3
-      with:
-        node-version: 10.x
-    - name: Install dependencies
-      run: |
-        sudo apt-get update
-        sudo apt-get -y install w3c-linkchecker
-    - name: Check websocket connection
-      run: |
-        set -o xtrace
-        wget https://github.com/vi/websocat/releases/download/v1.6.0/websocat_amd64-linux-static -O websocat
-        chmod +x websocat
-        ./websocat -q -uU "wss://reanimate.clozecards.com/ws/"
-    - name: Check links at reanimate.github.io
-      run: checklink --quiet --broken "https://reanimate.github.io/" >> failures.txt
-    - name: Check links at reanimate.readthedocs.io
-      run: checklink --quiet --broken "https://reanimate.readthedocs.io/" --suppress-broken 403:https://inkscape.org/ --suppress-broken 403:https://wiki.gnome.org/Projects/LibRsvg >> failures.txt
-    # Haddock generates 404 links by default. :(
-    #- name: Check links in haddock docs
-    #  run: checklink --quiet --broken "https://hackage.haskell.org/package/reanimate/docs/Reanimate.html" >> failures.txt
-    - name: Check for failures
-      run: |
-        if [ -s failures.txt ]; then
-          cat failures.txt
-          exit 1
-        fi