Was looking for a way to bulk delete exclusions in Radarr and did not find anything. I was able to figure it out going right into the database without having to stop the container.
List Exclusions
sqlite3 /mnt/user/appdata/radarr/radarr.db 'select * from ImportExclusions'
Delete Exclusions
sqlite3 /mnt/user/appdata/radarr/radarr.db 'delete from ImportExclusions'
Just refresh Radarr once you delete.