newsticker--cache-remove
newsticker--cache-remove is a compiled Lisp function in `newst-backend.el
'.
(newsticker--cache-remove DATA FEED-SYMBOL AGE)
Remove all entries from DATA in the feed FEED-SYMBOL with AGE.
FEED-SYMBOL may be 'any. Entries from old feeds, which are no longer in
`newsticker-url-list' or `newsticker-url-list-defaults', are removed as
well.