snapshot: remove mutually exclusive memory and disk-only duplicate check
snapshot: remove mutually exclusive memory and disk-only duplicate check

The work was done at the time of snapshot xmlstring parsing

 if (offline && def->memory &&
     def->memory != VIR_DOMAIN_SNAPSHOT_LOCATION_NONE) {
     virReportError(...);
 }

nertpinx/libvirt,elmarco/libvirt,elmarco/libvirt,eskultety/libvirt,jfehlig/libvirt,agx/libvirt,agx/libvirt,shugaoye/libvirt,libvirt/libvirt,andreabolognani/libvirt,libvirt/libvirt,andreabolognani/libvirt,zhlcindy/libvirt-1.1.4-maintain,VenkatDatta/libvirt,olafhering/libvirt,agx/libvirt,fabianfreyer/libvirt,elmarco/libvirt,zippy2/libvirt,fabianfreyer/libvirt,datto/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,eskultety/libvirt,rlaager/libvirt,taget/libvirt,cbosdo/libvirt,jfehlig/libvirt,libvirt/libvirt,VenkatDatta/libvirt,eskultety/libvirt,olafhering/libvirt,VenkatDatta/libvirt,shugaoye/libvirt,crobinso/libvirt,rlaager/libvirt,agx/libvirt,taget/libvirt,rlaager/libvirt,zippy2/libvirt,zhlcindy/libvirt-1.1.4-maintain,crobinso/libvirt,jardasgit/libvirt,nertpinx/libvirt,datto/libvirt,olafhering/libvirt,andreabolognani/libvirt,andreabolognani/libvirt,taget/libvirt,shugaoye/libvirt,jardasgit/libvirt,datto/libvirt,VenkatDatta/libvirt,elmarco/libvirt,zhlcindy/libvirt-1.1.4-maintain,jfehlig/libvirt,crobinso/libvirt,cbosdo/libvirt,nertpinx/libvirt,olafhering/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,cbosdo/libvirt,rlaager/libvirt,zhlcindy/libvirt-1.1.4-maintain,nertpinx/libvirt,cbosdo/libvirt,eskultety/libvirt,VenkatDatta/libvirt,shugaoye/libvirt,cbosdo/libvirt,datto/libvirt,taget/libvirt,agx/libvirt,taget/libvirt,zippy2/libvirt,fabianfreyer/libvirt,elmarco/libvirt,jardasgit/libvirt,eskultety/libvirt,zhlcindy/libvirt-1.1.4-maintain,jardasgit/libvirt,jardasgit/libvirt,libvirt/libvirt,rlaager/libvirt,zippy2/libvirt,shugaoye/libvirt,datto/libvirt,andreabolognani/libvirt,crobinso/libvirt