removed invalid repo and added it to blacklist

[soudeepan]

Description

I removed a repo which is now invalid and added it to blacklist.

Checklist

• [X] I understand that if I don't put a description or check all of these points, the pull request will not even be looked at
• [X] I have read the contributing guidelines
• [X] If changes are requested, I understand my pull request will not be merged until all changes are made
• [X] My branch is up to date with main
• [X] I am not just tossing in random files or completely irrelevant things
• [X] I will not add a comment, create an issue, or anything similar requesting for this pull request to be reviewed