Removing a cluster member with WebSphere Application Server 8.5

1. Open the WebSphere Console.
2. Stop the cluster members.
3. Navigation area, expand Servers and click Clusters.
4. Click the cluster for which you want to change the membership.
5. Under Additional Properties, click Cluster members.
6. Select the cluster members you want to remove from the cluster and click Delete.
7. Click Save in the Administrative Console
8. Click Review to save your configuration.
9. Goto System administration --> Nodes and Click synchronized
10. Log out of the WebSphere Administrative Console.
11. Regenerate the Web server plug-in and copy the plug-in to the Web server.