kbfs_cr_test: get rid of more NotifyChanges test uses
kbfs_cr_test: get rid of more NotifyChanges test uses

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