ci: optimize GitHub Actions workflow configuration

- Remove the `testing06` job related to testing IPv6 from the GitHub Actions workflow.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

.github/workflows/version.yml

@@ -282,31 +282,3 @@ jobs:
           script: |
             whoami && echo 'hello world' && touch todo.txt
             sudo whoami
-
-  testing06:
-    name: testing ipv6
-    runs-on: ubuntu-latest
-    steps:
-      - name: checkout
-        uses: actions/checkout@v4
-
-      - name: Set up WARP
-        uses: fscarmen/warp-on-actions@v1.1
-        with:
-          stack: dual
-
-      - name: testing ipv6 for command
-        run: |
-          curl -m 9 --ipv6 --verbose https://google.com
-
-      - name: testing ipv6
-        uses: appleboy/ssh-action@v1.0.3
-        with:
-          host: 2402:1f00:8000:800::2628
-          username: ubuntu
-          password: ${{ secrets.OVH_PASSWORD }}
-          protocol: tcp6
-          port: 22
-          command_timeout: 30s
-          script: |
-            whoami