ci: remove ssh-keyscan step from workflow

.gitea/workflows/deploy.yml

@@ -19,8 +19,6 @@ jobs:
           mkdir -p ~/.ssh
           echo "$SSH_KEY" > ~/.ssh/id_ed25519
           chmod 600 ~/.ssh/id_ed25519
-          # 172.17.0.1 = docker host from inside runner container
-          ssh-keyscan -p 2234 -H 172.17.0.1 >> ~/.ssh/known_hosts
 
       - name: Deploy via SSH (with VPN for docker build)
         shell: sh