When you have a highly available VMM server, to uninstall the high availability completely you will need to uninstall the VMM management server from each node in the cluster.
Before uninstalling VMM management server, ensure that any connections to VMM management server are closed.
Carry out the following steps to remove an additional node of a VMM:
On a VMM highly available server node, in the
Programs and Features
folder (Control | Panel | Programs), click on Microsoft System Center 2012 Virtual Machine Manager and click on Remove features.On the Select features to remove page, click on the VMM management server and click on Next.
On the Database options page, click on Next.
On the Summary page, click on Uninstall and then click on Close.