Remove Prepare git step from release-tracker.yml

Signed-off-by: Tamal Saha <tamal@appscode.com>

Author: tamalsaha

.github/workflows/release-tracker.yml

@@ -21,15 +21,6 @@ jobs:
         with:
           submodules: true
 
-      - name: Prepare git
-        env:
-          GITHUB_USER: ${{ github.actor }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          git config --global user.name "${GITHUB_USER}"
-          git config --global user.email "${GITHUB_USER}@appscode.com"
-          git remote set-url origin https://${GITHUB_USER}:${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY}.git
-
       - name: Generate GitHub App token
         id: app-token
         if: |