[Dead Source Removal] thefluffyhangoutgroup

[Middlepepper]

Describe why this should be added

The Group has taken down their website and Group has moved to Mangadex for hosting.

Other details

Website: https://www.fluffyhangout.club

Acknowledgements

• [X] I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open issue.
• [X] I have written a short but informative title.
• [X] If this is an issue with the app itself, I should be opening an issue in the app repository.
• [X] I have updated the app to version 0.13.5.
• [X] I have updated all installed extensions.
• [X] I will fill out all of the requested information in this form.