We've merged few repos in platform/pde/equinox but the "old" repositories are still there in github and still allow users to create PR's and bugs. Github provides "Archive this repository" action in settings, which makes interactions with archived repo not possible.
We should adk foundation to perform this for the obsoleted repos below.
See https://github.com/iloveeclipse/bytecodeoutline for an example of archived repo.
To be archived: