Remove deprecated contrib components

contrib/README.md

@@ -1,7 +1,4 @@
-Please note: This component is **unmaintained and out-of-date**.
+The contrib directory contains third-party applications maintained externally.
 
-If the component fails to meet the [contrib requirements](https://github.com/kubeflow/manifests/blob/master/proposals/20220926-contrib-component-guidelines.md#component-requirements)
- by the next Kubeflow release ([1.7](https://github.com/kubeflow/community/tree/master/releases/release-1.7#timeline)),
- it will be removed from the [`manifest`](https://github.com/kubeflow/manifests) repository.
-
-Updates to the `/contrib` components can be found in the [tracking issue](https://github.com/kubeflow/manifests/issues/2311).
+All contrib components must meet the [requirements](https://github.com/kubeflow/manifests/blob/master/proposals/20220926-contrib-component-guidelines.md#component-requirements)
+ to be considered active and failure to meet them will result in deprecation and removal from the Kubeflow manifest repository.