Revert "Add workflow for github releases. (#5145)"

This reverts commit 25b7608cbed7681c0ff6f32da4934e9f666b7f4c.

.github/workflows/release.yml

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
deleted file mode 100644
index 787f49b..0000000
--- a/.github/workflows/release.yml
+++ /dev/null
@@ -1,21 +0,0 @@
-name: Create a release branch from release tag
-
-on:
-  push:
-    tags:
-      - 'v[0-9]+.[0-9]+'
-      - '!v[0-9]+.[0-9]+.rc*'
-
-jobs:
-  prepare-release-job:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - name: Prepare CHANGELOG for version
-        run: |
-          python utils/generate_changelog.py CHANGES ${{ github.ref_name }} VERSION_CHANGELOG
-      - name: Create release
-        run: |
-          gh release create -F VERSION_CHANGELOG ${{ github.ref_name }}
-        env:
-          GITHUB_TOKEN: ${{ github.token }}