Mike Fleetwood authored Apr 13, 2019 and Curtis Gedak committed Apr 15, 2019

Formatting a partition to cleared over the top of LVM2 PV leaves the
"lvm" flag set on the partition; where as formatting with an actual file
system over the top of an LVM2 PV clears the "lvm" flag.  This is true
for both MSDOS and GPT partitioned drives.

Fix by setting the partition type when formatting to cleared too.

Closes !36 - Set partition type when clearing partition contents