Revert "lxc: ensure setns() syscall is defined"
Revert "lxc: ensure setns() syscall is defined"

After my previous commit this commit is no longer needed.

This reverts commit eff95ac8fce8af47c0948a1c8a654b210633a350.

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