Remove IPv4 installation requirements

I'll add them in another PR

guides/common/modules/con_ipv4-and-ipv6-requirements.adoc

@@ -10,17 +10,6 @@ Dual-stack {Project} installation that uses both IPv4 and IPv6 is not supported.
 ====
 endif::[]
 
-The following requirements apply to installations in an IPv4 network:
-
-* An IPv6 loopback must be configured on the base system.
-The loopback is typically configured by default.
-Do not disable it.
-* Do not disable IPv6 in kernel by adding the `ipv6.disable=1` kernel parameter.
-ifdef::satellite[]
-+
-For a supported way to disable the IPv6 protocol, see link:https://access.redhat.com/solutions/5045841[How do I disable the IPv6 protocol on Red Hat Satellite and/or Red Hat Capsule server?] in Red{nbsp}Hat Knowledgebase.
-endif::[]
-
 The following requirements apply to installations in an IPv6 network:
 
 * If you intend to use {Project} to provision hosts, you must deploy an external DHCP IPv6 server as a separate, unmanaged service to bootstrap clients into GRUB2.