RFE: remove from mkosi-initrd the udev rules copied from dracut

[aafeijoo-suse]

We should consider removing these 2 udev rules:

• 10-mkosi-initrd-dm.rules is no longer necessary since 10-dm-rules sets the db_persist option (https://gitlab.com/lvmteam/lvm2/-/commit/eb4f744820832aff3d6da1bba14f12e91a5b3535).

• Regarding 10-mkosi-initrd-md.rules, it does the same as 63-md-raid-arrays.rules (https://github.com/md-raid-utilities/mdadm/blob/main/udev-md-raid-arrays.rules), also included in the initrd, except setting db_persist. This option was set by @prajnoha in the dracut's matching 59-persistent-storage-md.rules with the addition of 69-dm-lvm-metad.rules (dracutdevs/dracut@b874d4b) to fix LVM on md activation (year 2013), but this rule is not added anymore (dracutdevs/dracut@50e7466) and it was also replaced by 69-dm-lvm.rules (https://gitlab.com/lvmteam/lvm2/-/commit/67722b312390cdab29c076c912e14bd739c5c0f6) and removed from lvm2 (https://gitlab.com/lvmteam/lvm2/-/commit/042fbd43d25f4cc69ceec1aea4d0658bec54b6e3).

I had not any problem booting LVM on top of RAID using initrds generated by mkosi without the 2nd udev rule, but maybe I'm missing a specific case.

@prajnoha, @teigland, could any of you confirm if it is still required to set db_persist for LVM on md devices? In that case, a PR can be submitted here https://github.com/md-raid-utilities/mdadm, so we can safely remove the 2nd rule.