Removes every cached listing belonging to feeds that are gone.
A departure is not staleness. A feed this identity can no longer see has
no contents to serve, and dirty entries are still served while they
refresh, so marking one would keep showing a tree that has been taken
away. This deletes instead, and does so at once rather than on the
window, because there is nothing to race.
Removes every cached listing belonging to feeds that are gone.
A departure is not staleness. A feed this identity can no longer see has no contents to serve, and dirty entries are still served while they refresh, so marking one would keep showing a tree that has been taken away. This deletes instead, and does so at once rather than on the window, because there is nothing to race.