archive namespace reports mdbox_deleted: same as mdbox: is that ok?

[Marc]

Adding these steps



step 6.
=======
check if we have still them message stored, ok as expected

[@ testtest]# grep 45765765870 /home/popusers/testtest/mdbox/storage/*
/home/popusers/testtest/mdbox/storage/m.893:Subject: New file uploaded 45765765870

step 7.
=======
purge mailbox with

[@ testtest]# doveadm -v purge -u testtest

step 8.
=======
check if we have still them message stored,  no, ok as expected

[@ testtest]# grep 45765765870 /home/popusers/testtest/mdbox/storage/*
[@ testtest]#