remove redundant section (#56)

Signed-off-by: Manabu McCloskey <manabu.mccloskey@gmail.com>

docs/reference-implementation/installations/idpbuilder/idpbuilder.md

@@ -23,32 +23,3 @@ This can be useful in several ways:
 * Use within CI to perform integration testing.
 * Use as a local development environment for IDP engineers.
 
-
-## Running in Codespaces
-
-If you are interested in running idpbuilder in Codespaces through your browser, follow the following steps.
-
-1. Create a Codespaces instance. ![img](https://github.com/cnoe-io/stacks/blob/main/ref-implementation/images/codespaces-create.png)
-2. Wait for it to be ready. It may take several minutes.
-3. Get the latest release of idpbuilder:
-   ```bash
-    version=$(curl -Ls -o /dev/null -w %{url_effective} https://github.com/cnoe-io/idpbuilder/releases/latest)
-    version=${version##*/}
-    curl -L -o ./idpbuilder.tar.gz "https://github.com/cnoe-io/idpbuilder/releases/download/${version}/idpbuilder-$(uname | awk '{print tolower($0)}')-$(uname -m | sed 's/x86_64/amd64/').tar.gz"
-    tar xzf idpbuilder.tar.gz
-   ```
-4. Run idpbuilder:
-   ```
-    idpbuilder create --protocol http  \
-    --host ${CODESPACE_NAME}-8080.${GITHUB_CODESPACES_PORT_FORWARDING_DOMAIN} \
-    --port 8080 --use-path-routing
-   ```
-5. Because Codespaces gives a single externally routable host name for an instance, idpbuilder must deploy with path based routing. 
-   This means ArgoCD and Gitea UIs are given with the following commands.
-   * ArgoCD: `echo https://${CODESPACE_NAME}-8080.${GITHUB_CODESPACES_PORT_FORWARDING_DOMAIN}/argocd`
-   * Gitea: `echo https://${CODESPACE_NAME}-8080.${GITHUB_CODESPACES_PORT_FORWARDING_DOMAIN}/gitea`
-6. Note that not all examples work with path based routing. 
-
-## Extending the IDP builder
-
-We are actively working to include more patterns and examples of extending idpbuilder to get started easily.