qemu: Remove duplicated xen PACKAGECONFIG
qemu: Remove duplicated xen PACKAGECONFIG

The "meta/recipes-devtools/qemu/qemu.inc" already sets the PACKAGECONFIG[xen].

Signed-off-by: Diego Sueiro <ad8405088babfd9de78621db022334230b00cda7@arm.com>
Signed-off-by: Bruce Ashfield <284cc737d174a260eec2a2a6324a304f84b1ae0f@gmail.com>

lgirdk/meta-virtualization,lgirdk/meta-virtualization,lgirdk/meta-virtualization,lgirdk/meta-virtualization,lgirdk/meta-virtualization