fqdn: Remove/update stale comments
fqdn: Remove/update stale comments

FQDNs no longer generate CIDR rules, so update comments accordingly.

Signed-off-by: Jarno Rajahalme <0f1ab0ac7dffd9db21aa539af2fd4bb04abc3ad4@covalent.io>

tklauser/cilium,tklauser/cilium,cilium/cilium,michi-covalent/cilium,michi-covalent/cilium,michi-covalent/cilium,tgraf/cilium,michi-covalent/cilium,tgraf/cilium,cilium-team/cilium,cilium/cilium,tklauser/cilium,tgraf/cilium,cilium/cilium,tklauser/cilium,tgraf/cilium,tgraf/cilium,cilium/cilium,cilium/cilium,tklauser/cilium,cilium-team/cilium,michi-covalent/cilium,tgraf/cilium