qemu: Removed an outdated comment in qemuDomainSaveImageStartVM()
qemu: Removed an outdated comment in qemuDomainSaveImageStartVM()

Removed the comment 'Set the migration source' as it isn't valid anymore
and 'start it up' isn't useful as qemuProcessStart() is already a
speaking name.

Signed-off-by: Marc Hartmayer <7bafc8cd4e6394916d396e4f8cde69753be8d066@linux.vnet.ibm.com>

datto/libvirt,jardasgit/libvirt,datto/libvirt,olafhering/libvirt,jfehlig/libvirt,zippy2/libvirt,eskultety/libvirt,datto/libvirt,VenkatDatta/libvirt,andreabolognani/libvirt,taget/libvirt,jfehlig/libvirt,libvirt/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt,zippy2/libvirt,eskultety/libvirt,nertpinx/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,zippy2/libvirt,olafhering/libvirt,andreabolognani/libvirt,nertpinx/libvirt,datto/libvirt,jfehlig/libvirt,eskultety/libvirt,jardasgit/libvirt,VenkatDatta/libvirt,crobinso/libvirt,taget/libvirt,olafhering/libvirt,jardasgit/libvirt,nertpinx/libvirt,libvirt/libvirt,jardasgit/libvirt,taget/libvirt,nertpinx/libvirt,olafhering/libvirt,fabianfreyer/libvirt,crobinso/libvirt,zippy2/libvirt,libvirt/libvirt,andreabolognani/libvirt,datto/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,eskultety/libvirt,VenkatDatta/libvirt,taget/libvirt,taget/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,crobinso/libvirt,libvirt/libvirt,eskultety/libvirt,VenkatDatta/libvirt,jfehlig/libvirt,crobinso/libvirt