fix legacy unshallow

Author: tuxtof

.github/workflows/release.yml

@@ -24,9 +24,6 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Unshallow
-        run: git fetch --prune --unshallow
-
       - name: Set up Go
         uses: actions/setup-go@v5
         with: