How to purge old deployment without remove the VM


my datastore is almost full due to a deployment done in the created VMs.
For example, the VM id 5 has 2 disks

$ ls -l 5
total 629146048
-rw-rw-r-- 1 oneadmin oneadmin         1251 Aug 10 12:40 deployment.0
-rw-rw-r-- 1 oneadmin oneadmin         1062 Aug 10 15:48 deployment.1
-rw-rw-r-- 1 oneadmin oneadmin         1063 Aug 10 15:59 deployment.2
-rw-r--r-- 1 oneadmin oneadmin 322122547200 Aug 10 13:25 disk.0
-rw-r--r-- 1 oneadmin oneadmin       372736 Aug 10 15:59 disk.2
-rw-r--r-- 1 oneadmin oneadmin 322122547200 Aug 11 10:09 disk.3

but the current used is only disk.3
I would like to know how can I remove the disk.0
I don’t need to rollback the last deployment.

For you information the disk.0 is still available because I suppose I have detach it and it was a persistent disk. Then I have removed the persistence and I have attach again so, to due to ssh type datastore, it creates the disk.3

I’m using OpenNebula 5.4

Thanks in advance,