CNV-71950: Remove references to RHEL 8 (deprecated) from docs

Author: MirzWeiss

modules/virt-hot-plugging-memory.adoc

@@ -31,7 +31,6 @@ Memory hot plugging for virtual machines requires guest operating system support
 Supported guest operating systems:
 
 * RHEL 9.4 and later
-* RHEL 8.10 and later (hot-unplug is disabled by default)
 * Other Linux guests require kernel version 5.16 or later and the `virtio-mem` kernel module
 * Windows guests require `virtio-mem` driver version 100.95.104.26200 or later
 ====

virt/getting_started/virt-using-the-cli-tools.adoc

@@ -16,12 +16,8 @@ You can access and modify virtual machine (VM) disk images by using the link:htt
 
 To install `virtctl` on {op-system-base-full} 9 or later, Linux, Windows, and MacOS operating systems, you can download and install the `virtctl` binary file.
 
-To install `virtctl` on {op-system-base} 8, you can enable the {VirtProductName} repository and then install the `kubevirt-virtctl` RPM package.
-
 include::modules/virt-installing-virtctl-binary.adoc[leveloffset=+2]
 
-include::modules/virt-installing-virtctl-rhel8-rpm.adoc[leveloffset=+2]
-
 [id="virtctl-commands_virt-using-the-cli-tools"]
 == virtctl commands