Remove Nightly

Workflow found to be ineffective after the removal of unclaimed_usernames. All sites skipped by tests due to the lack of this value, leading to false success of this test.

Workflow will be eventually rewritten following the new standard.

.github/workflows/nightly.yml

@@ -1,27 +0,0 @@
-name: Nightly
-
-on:
-  schedule:
-    # Run Nightly Tests At 3AM (The Hour Of The Wolf) Every Day
-    - cron:  '0 3 * * *'
-
-jobs:
-  tests:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: [3.x]
-
-    steps:
-    - uses: actions/checkout@v4
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Install Dependencies
-      run: |
-        python -m pip install --upgrade pip
-        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-    - name: Sherlock Site Coverage Tests
-      run: |
-        cd sherlock && python -m unittest tests.all.SherlockSiteCoverageTests --verbose