tlf_edit_history: disable cached edit history for now
tlf_edit_history: disable cached edit history for now

Until we listen for and respond to updates.

Issue: KBFS-1301

keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client