Update release workflow

Author: ericwang401

.github/workflows/release.yml

@@ -22,7 +22,6 @@ jobs:
               env:
                 REF: ${{ github.ref }}
               run: |
-                BRANCH=release/${REF:10}
                 sed -i 's/"version": "0.0.0"/"version": "'"${REF:11}"'"/' src-tauri/tauri.conf.json
                 echo "version_name=${REF:10}" >> $GITHUB_OUTPUT
             - name: setup node