Revert "quorum_queue_member_reconciliation_SUITE: Disconnect node after removing it from cluster"

This reverts commit 50aec18.

Author: dumbbell

deps/rabbit/test/quorum_queue_member_reconciliation_SUITE.erl

@@ -91,21 +91,8 @@ reset_nodes([], _Leader) ->
     ok;
 reset_nodes([Node| Nodes], Leader) ->
     ok = rabbit_control_helper:command(stop_app, Node),
-    case rabbit_control_helper:command(forget_cluster_node, Leader, [atom_to_list(Node)]) of
-        ok -> ok;
-        {error, 69,
-         <<"Error:\n{:not_a_cluster_node, ~c\"The node selected is not in the cluster.\"}">>} -> ok
-    end,
+    ok = rabbit_control_helper:command(forget_cluster_node, Leader, [atom_to_list(Node)]),
     ok = rabbit_control_helper:command(reset, Node),
-    %% Disconnect explicitly nodes from the node we just reset because it way
-    %% interfere with the restart of RabbitMQ below and peer discovery.
-    ClusterNodes = rpc:call(Leader, rabbit_db_cluster, members, []),
-    lists:foreach(
-      fun(N) ->
-              _ = catch erpc:call(
-                          N,
-                          erlang, disconnect_node, [Node])
-      end, ClusterNodes),
     ok = rabbit_control_helper:command(start_app, Node),
     reset_nodes(Nodes, Leader).