Docker extension defaults to workspace extension

... at least since 0.8.1

Author: karolz-ms

containers/docker-in-docker/README.md

@@ -45,17 +45,7 @@ You can adapt your own existing development container Dockerfile to support this
     "runArgs": ["-v","/var/run/docker.sock:/var/run/docker.sock"]
     ```
 
-3. Finally, update `devcontainer.json` to force the Docker extension to be installed inside the container instead of locally. From `.devcontainer/devcontainer.json`:
-
-    ```json
-    "settings": {
-        "remote.extensionKind": {
-            "ms-azuretools.vscode-docker": "workspace"
-        }
-    },
-    ```
-
-4. Press <kbd>F1</kbd> and run **Remote-Containers: Rebuild Container** so the changes take effect.
+3. Press <kbd>F1</kbd> and run **Remote-Containers: Rebuild Container** so the changes take effect.
 
 That's it!