fix: simplify kubectl setup, now mounted via runner config

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitea/workflows/deploy.yaml

@@ -67,10 +67,7 @@ jobs:
           docker push ${{ secrets.CR_SERVER }}/${{ env.CR_ORG }}/k8s-pod-monitor:latest 2>&1 | tee -a /tmp/build-monitor.log
 
       - name: Setup Kubectl
-        run: |
-          cp /opt/gitea/kubectl-bin /usr/local/bin/kubectl 2>/dev/null || \
-          { curl -sL "https://dl.k8s.io/release/v1.28.2/bin/linux/amd64/kubectl" -o kubectl && chmod +x kubectl && mv kubectl /usr/local/bin/; }
-          kubectl version --client
+        run: kubectl version --client
 
       - name: Set kubeconfig
         run: |