patches/openwrt: busybox's whois: drop it as not accepted in OpenWrt
Based on the mailing list https://lists.openwrt.org/pipermail/openwrt-devel/2020-November/032133.html it was decided not to enable whois in busybox by default, but there were added whois package in OpenWrt packages feed, so anyone can install it if he/she wants.
Follow-up of https://gitlab.nic.cz/turris/turris-build/-/merge_requests/280