Drop duplicate information

Author: aneta-petrova

guides/common/modules/con_supported-usage-of-project-components.adoc

@@ -13,11 +13,6 @@ Reserve this instance solely for the purpose of running {ProjectName}.
 Not supported: Using the operating system included with {Project} to run other daemons, applications, or services within your environment.
 endif::[]
 
-SELinux::
-Ensure SELinux is in enforcing or permissive mode.
-+
-Not supported: Installation with disabled SELinux.
-
 Foreman::
 You can extend Foreman with plugins packaged with {ProjectName}.
 ifdef::satellite[]

guides/common/modules/ref_system-requirements.adoc

@@ -14,10 +14,6 @@ Follow these system requirements when installing {ProductName}:
 Do not use an existing system because the {Project} installer will affect the configuration of several components.
 * Ensure you have administrative user (root) access to the system.
 * Ensure the system meets the following requirements:
-** x86_64 architecture
-ifdef::satellite[]
-** The latest version of {RHEL} 9
-endif::[]
 ** 4-core 2.0 GHz CPU or higher
 
 ifeval::["{context}" == "{project-context}"]
@@ -34,11 +30,6 @@ ifdef::katello,satellite[]
 ** A unique host name, which can contain lower-case letters, numbers, dots (.) and hyphens (-)
 endif::[]
 
-ifdef::satellite[]
-** A current {ProjectName} subscription
-endif::[]
-** Full forward and reverse DNS resolution using a fully-qualified domain name
-
 * Ensure that the system does not have the following users provided by external identity providers.
 These user accounts can cause conflicts with the local users that {ProductName} creates:
 ** {apache-user}