[workflow] removed unused pypi release workflow (#2022)

.github/workflows/release.yml

-name: Publish to PyPI
-
-on: workflow_dispatch
-
-jobs:
-  build-n-publish:
-    if: github.ref_name == 'main' && github.repository == 'hpcaitech/ColossalAI' && contains(fromJson('["FrankLeeeee", "ver217", "feifeibear", "kurisusnowdeng"]'), github.actor)
-    name: Build and publish Python 🐍 distributions 📦 to PyPI
-    runs-on: ubuntu-latest
-    timeout-minutes: 20
-    steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-python@v2
-      with:
-        python-version: '3.7.12'
-    - run: python setup.py sdist build
-    # publish to PyPI if executed on the main branch
-    # publish to Test PyPI if executed on the develop branch
-    - name: Publish package to PyPI
-      uses: pypa/gh-action-pypi-publish@release/v1
-      with:
-        user: __token__
-        password: ${{ secrets.PYPI_API_TOKEN }}
-        verbose: true

.github/workflows/release_test.yml

-name: Publish to Test PyPI
-
-on: workflow_dispatch
-
-jobs:
-  build-n-publish:
-    if: github.repository == 'hpcaitech/ColossalAI' && contains(fromJson('["FrankLeeeee", "ver217", "feifeibear", "kurisusnowdeng"]'), github.actor)
-    name: Build and publish Python 🐍 distributions 📦 to Test PyPI
-    runs-on: ubuntu-latest
-    timeout-minutes: 20
-    steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-python@v2
-      with:
-        python-version: '3.7.12'
-    - run: python setup.py sdist build
-    # publish to PyPI if executed on the main branch
-    # publish to Test PyPI if executed on the develop branch
-    - name: Publish package to Test PyPI
-      uses: pypa/gh-action-pypi-publish@release/v1
-      with:
-        user: __token__
-        password: ${{ secrets.TEST_PYPI_API_TOKEN }}
-        repository_url: https://test.pypi.org/legacy/
-        verbose: true