Remove default machine pool info

Author: mletalie

modules/creating-a-machine-pool.adoc

@@ -7,3 +7,7 @@
 = Creating a machine pool
 
 A default machine pool is created when you install a {product-title} (ROSA) cluster. After installation, you can create additional machine pools for your cluster by using {cluster-manager} or the ROSA CLI (`rosa`).
+[NOTE]
+====
+For users of ROSA CLI `rosa` version 1.2.25 and prior versions, the default machine pool is identified as `Default`. For users of ROSA CLI  `rosa` version 1.2.26 and beyond, the default machine pool is identified as `Worker`.
+====

modules/deleting-machine-pools.adoc

@@ -17,10 +17,6 @@ ifndef::openshift-rosa[]
 Openshift Cluster Manager.
 endif::[]
 
-[NOTE]
-====
-The default machine pool cannot be deleted.
-====
 
 // Users that wish to delete the default machine pool that is automatically created during the installation of a {product-title} (ROSA) cluster can do so using the OCM or ROSA CLI.
 //

rosa_cluster_admin/rosa_nodes/rosa-nodes-machinepools-about.adoc

@@ -27,7 +27,12 @@ Machine pools are a higher level construct to compute machine sets.
 
 A machine pool creates compute machine sets that are all clones of the same configuration across availability zones. Machine pools perform all of the host node provisioning management actions on a worker node. If you need more machines or must scale them down, change the number of replicas in the machine pool to meet your compute needs. You can manually configure scaling or set autoscaling.
 
-By default, a cluster has one machine pool. During cluster installation, you can label this machine pool. After the cluster is installed, the `Default` machine pool cannot be deleted, and its node type or size cannot be changed.
+By default, a cluster has one machine pool. During cluster installation, you can label this machine pool. After the cluster is installed its node type or size cannot be changed.
+
+[NOTE]
+====
+For users of ROSA CLI `rosa` version 1.2.25 and prior versions, the default machine pool is identified as `Default`. For users of ROSA CLI  `rosa` version 1.2.26 and beyond, the default machine pool is identified as `Worker`.
+====
 
 After a cluster's installation:
 
@@ -39,7 +44,7 @@ After a cluster's installation:
 You cannot change the machine pool node type or size. The machine pool node type or size is specified during their creation only. If you need a different node type or size, you must re-create a machine pool and specify the required node type or size values.
 ====
 * You can add a label to each added machine pool.
-* You cannot delete the `Default` machine pool. However, you can delete the non-default machine pools. 
+* You can delete machine pools.
 
 Multiple machine pools can exist on a single cluster, and each machine pool can contain a unique node type and node size configuration.