Description of problem:

Dummy plugin entry displayed in the catalog. There's a placeholder plugin, perhaps to show what a certified by Red Hat entry looks like. 

This is being powered by https://github.com/redhat-developer/rhdh/blob/main/catalog-entities/marketplace/plugins/1-boilerplate.yaml 

Prerequisites (if any, like setup, operators/versions):

Steps to Reproduce

1. go to extensions

Actual results:

Can see dummy plugin entry

Expected results:

Shouldn't see any dummy plugin entry

Reproducibility (Always/Intermittent/Only Once): Always

Build Details: 

Additional info (Such as Logs, Screenshots, etc):