Revert "Set UMN=true in disconnected" (#2867)

This reverts commit 23158a9.

Author: rawagner

libs/ui-lib/lib/ocm/components/clusterWizard/ClusterDetailsForm.tsx

@@ -31,7 +31,6 @@ import {
   InfraEnv,
   ManagedDomain,
 } from '@openshift-assisted/types/assisted-installer-service';
-import { useFeature } from '../../hooks/use-feature';
 
 type ClusterDetailsFormProps = {
   cluster?: Cluster;
@@ -65,7 +64,6 @@ const ClusterDetailsForm = (props: ClusterDetailsFormProps) => {
   } = props;
 
   const clusterWizardContext = useClusterWizardContext();
-  const isSingleCluster = useFeature('ASSISTED_INSTALLER_SINGLE_CLUSTER_FEATURE');
   const { search } = useLocation();
   const { isViewerMode } = useSelector(selectCurrentClusterPermissionsState);
   const { clearAlerts } = useAlerts();
@@ -85,11 +83,11 @@ const ClusterDetailsForm = (props: ClusterDetailsFormProps) => {
         const params = ClusterDetailsService.getClusterUpdateParams(values, resetPlatform);
         await handleClusterUpdate(cluster.id, params, values.addCustomManifest);
       } else {
-        const params = ClusterDetailsService.getClusterCreateParams(values, isSingleCluster);
+        const params = ClusterDetailsService.getClusterCreateParams(values);
         await handleClusterCreate(params, values.addCustomManifest);
       }
     },
-    [cluster, handleClusterCreate, handleClusterUpdate, isSingleCluster],
+    [cluster, handleClusterCreate, handleClusterUpdate],
   );
 
   const handleOnNext = React.useCallback(

libs/ui-lib/lib/ocm/services/ClusterDetailsService.ts

@@ -34,14 +34,10 @@ const getExistingClusterCpuArchitecture = (infraEnv: InfraEnv) => {
 };
 
 const ClusterDetailsService = {
-  getClusterCreateParams(
-    values: OcmClusterDetailsValues,
-    isSingleCluster: boolean,
-  ): ClusterCreateParamsWithStaticNetworking {
-    const controlPlaneCount = toNumber(values.controlPlaneCount);
+  getClusterCreateParams(values: OcmClusterDetailsValues): ClusterCreateParamsWithStaticNetworking {
     const params: ClusterCreateParamsWithStaticNetworking = {
       name: values.name,
-      controlPlaneCount,
+      controlPlaneCount: toNumber(values.controlPlaneCount),
       openshiftVersion: values.openshiftVersion,
       pullSecret: values.pullSecret,
       baseDnsDomain: values.baseDnsDomain,
@@ -60,7 +56,7 @@ const ClusterDetailsService = {
       },
     };
 
-    if (!values.isCMNSupported || (isSingleCluster && controlPlaneCount !== 1)) {
+    if (!values.isCMNSupported) {
       params.userManagedNetworking = true;
     }