I specify lots of question as my favorite with out attention. Now my favorites become useless and unmanageable. I wish to find any way to delete them all and start to make as a favorites with more attention for the next time inoder to do a better search between them. So is there any way to undo favorites?

I specify lots of question as my favorites without attention. Now my favorites become useless and unmanageable. I wish to find any way to delete them all and start to make as favorites with more attention for the next time in order to do a better search between them. So is there any way to undo favorites?