ci: remove incorrect precheck in extract version step

Author: mkfsn

.github/workflows/draft-new-release.yaml

@@ -13,7 +13,6 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: Extract version from branch name
-        if: startsWith(github.event.pull_request.head.ref, 'release/')
         run: |
           BRANCH_NAME=${GITHUB_REF#refs/heads/}
           VERSION=${BRANCH_NAME#release/}