YARN-8434. Update federation documentation of Nodemanager configurations. Contributed by Bibin A Chundatt.

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/Federation.md

@@ -267,7 +267,6 @@ These are extra configurations that should appear in the **conf/yarn-site.xml**
 |:---- |:---- |
 | `yarn.nodemanager.amrmproxy.enabled` | `true` | Whether or not the AMRMProxy is enabled. |
 | `yarn.nodemanager.amrmproxy.interceptor-class.pipeline` | `org.apache.hadoop.yarn.server.nodemanager.amrmproxy.FederationInterceptor` | A comma-separated list of interceptors to be run at the amrmproxy. For federation the last step in the pipeline should be the FederationInterceptor. |
-| `yarn.client.failover-proxy-provider` | `org.apache.hadoop.yarn.server.federation.failover.FederationRMFailoverProxyProvider` | The class used to connect to the RMs by looking up the membership information in federation state-store. This must be set if federation is enabled, even if RM HA is not enabled.|
 
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