Delete wiki pages and attachments you created
This plugin allows users to delete wiki pages and wiki/ticket attachments that they created. Does not yet cover tickets, but if there is demand I can try to add it.
If you have any issues, create a new ticket.
Download the zipped source from here.
First enable it:
[components] selfdelete.* = enabled
then grant any users you want the WIKI_DELETE_SELF or TICKET_DELETE_SELF permissions.