OCPBUGS#17540:Removed incorrect reference to ppc64le and s390x

Author: mjpytlak

modules/rhel-compute-overview.adoc

@@ -8,7 +8,7 @@
 [id="rhel-compute-overview_{context}"]
 = About adding RHEL compute nodes to a cluster
 
-In {product-title} {product-version}, you have the option of using {op-system-base-full} machines as compute machines in your cluster if you use a user-provisioned or installer-provisioned infrastructure installation on the `x86_64`, `ppc64le`, and `s390x` architectures. You must use {op-system-first} machines for the control plane machines in your cluster.
+In {product-title} {product-version}, you have the option of using {op-system-base-full} machines as compute machines in your cluster if you use a user-provisioned or installer-provisioned infrastructure installation on the `x86_64` architecture. You must use {op-system-first} machines for the control plane machines in your cluster.
 
 If you choose to use {op-system-base} compute machines in your cluster, you are responsible for all operating system life cycle management and maintenance. You must perform system updates, apply patches, and complete all other required tasks.