cubicweb #2542083 [ldapfeed] users removed through a filter are NOT deactivated [done]

filtered out users should be deactivated just like deleted ones

priorityimportant
typebug
done in3.15.8
load1.000
load left0.000
closed by#9f95c2368b8b [ldaputils,ldapparser] correctly compute "deleted" users (closes #2542083)