revert cluster broadcasting todo

Author: sjpotter

packages/client/lib/client/index.spec.ts

@@ -123,6 +123,7 @@ describe('Client', () => {
       client.connect()
     ]);
 
+    // TODO: This is failing and I don't know why.  when I run manually it seems fine.
     await Promise.all([
       once(client, 'end'),
       client.close()

packages/client/lib/cluster/index.ts

@@ -163,11 +163,6 @@ export default class RedisCluster<
         break;
     }
 
-    // TODO: remove once request & response policies are ready
-    if (key === undefined && !command.IS_FORWARD_COMMAND) {
-      throw new Error('TODO');
-    }
-
     return key;
   }