[PLT-6232] Remove "(Beta)" tag from HA in System Console (#6008)

webapp/components/admin_console/admin_sidebar.jsx

@@ -96,7 +96,7 @@ export default class AdminSidebar extends React.Component {
                         title={
                             <FormattedMessage
                                 id='admin.sidebar.cluster'
-                                defaultMessage='High Availability (Beta)'
+                                defaultMessage='High Availability'
                             />
                         }
                     />