The only use case of the platform_has() infrastructure has been
removed again, so remove the whole feature.
Signed-off-by: NJuergen Gross <jgross@suse.com>
Tested-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> # Arm64 guest using Xen
Reviewed-by: NStefano Stabellini <sstabellini@kernel.org>
Link: https://lore.kernel.org/r/20220622063838.8854-3-jgross@suse.comSigned-off-by: NJuergen Gross <jgross@suse.com>