Remove Zenlogin as sponsor and unused files

.github/workflows/test_of_push_and_pull.yml

@@ -1,38 +0,0 @@
-name: 'Tests of push & pull'
-
-on:
-    workflow_dispatch:
-    # push:
-    # branches: [ main ]
-    # pull_request:
-    # branches: [ main ]
-
-env:
-    FILENAME: README.md
-
-jobs:
-    tests:
-        name: 'Validate README.md changes'
-        runs-on: ubuntu-latest
-        steps:
-            - name: Checkout repository
-              uses: actions/checkout@v2
-
-            - name: Set up Python
-              uses: actions/setup-python@v2
-              with:
-                  python-version: '3.8'
-
-            - name: Install dependencies
-              run: python -m pip install -r scripts/requirements.txt
-
-            - name: Validate Markdown format
-              run: python scripts/validate/format.py ${FILENAME}
-
-            - name: Validate pull request changes
-              run: scripts/github_pull_request.sh ${{ github.repository }} ${{ github.event.pull_request.number }} ${FILENAME}
-              if: github.event_name == 'pull_request'
-
-            - name: Checking if push changes are duplicated
-              run: python scripts/validate/links.py ${FILENAME} --only_duplicate_links_checker
-              if: github.event_name == 'push'

.github/workflows/test_of_validate_package.yml

@@ -1,30 +0,0 @@
-name: 'Tests of validate package'
-
-on:
-    workflow_dispatch:
-    # push:
-    # branches: [ main ]
-    # pull_request:
-    # branches: [ main ]
-
-jobs:
-    unittest:
-        name: 'Run tests of validate package'
-        runs-on: ubuntu-latest
-
-        steps:
-            - name: Checkout repository
-              uses: actions/checkout@v2
-
-            - name: Set up Python
-              uses: actions/setup-python@v2
-              with:
-                  python-version: '3.8'
-
-            - name: Install dependencies
-              run: python -m pip install -r scripts/requirements.txt
-
-            - name: Run Unittest
-              run: |
-                  cd scripts
-                  python -m unittest discover tests/ --verbose

.github/workflows/validate_links.yml

@@ -1,28 +0,0 @@
-name: 'Validate links'
-
-on:
-    workflow_dispatch:
-    # schedule:
-    # - cron:  '0 0 * * *'
-
-env:
-    FILENAME: README.md
-
-jobs:
-    validate_links:
-        name: 'Check all links are working'
-        runs-on: ubuntu-latest
-        steps:
-            - name: Checkout repository
-              uses: actions/checkout@v2
-
-            - name: Set up Python
-              uses: actions/setup-python@v2
-              with:
-                  python-version: '3.8'
-
-            - name: Install dependencies
-              run: python -m pip install -r scripts/requirements.txt
-
-            - name: Validate all links from README.md
-              run: python scripts/validate/links.py ${FILENAME}