LJ::Talk::delete_comment — Deletes a single comment.
LJ::Talk::delete_comment(u, jitemid, jtalkid, state
u. Userid or user object to delete comment from.
jitemid. Journal itemid of item to delete comment from.
jtalkid. Journal talkid of the comment to delete.
state. Optional. If you know it, provide the state of the comment being deleted, else we load it.