remove set go

.gitea/workflows/go.yaml

@@ -8,10 +8,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - name: Setup Go
+
-        uses: actions/setup-go@v5
-        with:
-          go-version: '1.21.x'
       - name: Build
         container:
           image: golang:latest