dfu: Remove functionality for modifying DfuSe files
dfu: Remove functionality for modifying DfuSe files

Better tools already exist.

fwupd/fwupd,fwupd/fwupd,hughsie/fwupd,hughsie/fwupd,hughsie/fwupd,fwupd/fwupd,hughsie/fwupd,fwupd/fwupd