[aur-general] Removal request for [linux-xen].

Please remove linux-xen[1]. Xen support is enabled in core/x86_64/linux. Since Xen support is disabled in core/i686/linux due to its PAE dependency[2], Xen support was enabled in linux-pae[3]. The linux-xen packages is out-dated and no longer necessary. [1] https://aur.archlinux.org/packages/linux-xen [2] https://mailman.archlinux.org/pipermail/arch-dev-public/2009-October/014142.... [3] https://aur.archlinux.org/packages/linux-pae/