folder_branch_ops: turn off block archiving
folder_branch_ops: turn off block archiving

Until we figure out KBFS-641.

Issue: KBFS-641

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