Erlang 25 compat: drop a duplicate flaky test

The test largely does what it's pattern-based version does.
During our Erlang 24 and 25 upgrade cycles, this version required
extra attention even though the feature works as advertised in
other tests and during manual testing.

Author: michaelklishin

deps/rabbitmq_federation/test/exchange_SUITE.erl

@@ -197,7 +197,7 @@ end_per_testcase(Testcase, Config) ->
     rabbit_ct_helpers:testcase_finished(Config, Testcase).
 
 %% -------------------------------------------------------------------
-%% Testcases.
+%% Test cases
 %% -------------------------------------------------------------------
 
 simple(Config) ->

deps/rabbitmq_federation/test/queue_SUITE.erl

@@ -15,7 +15,7 @@
 
 -import(rabbit_federation_test_util,
         [wait_for_federation/2, expect/3, expect/4,
-         set_upstream/4, set_upstream/5, clear_upstream/3, clear_upstream_set/3,
+         set_upstream/4, set_upstream/5, clear_upstream/3, set_upstream_set/4, clear_upstream_set/3,
          set_policy/5, clear_policy/3,
          set_policy_pattern/5, set_policy_upstream/5, q/2, with_ch/3,
          maybe_declare_queue/3, delete_queue/2,
@@ -33,7 +33,6 @@ all() ->
 
 groups() ->
     ClusterSize1 = [simple,
-                    multiple_upstreams,
                     multiple_upstreams_pattern,
                     multiple_downstreams,
                     message_flow,
@@ -188,17 +187,6 @@ simple(Config) ->
               expect_federation(Ch, <<"upstream">>, <<"fed.downstream">>)
       end, upstream_downstream(Config)).
 
-multiple_upstreams(Config) ->
-    SourceArgs = ?config(source_queue_args, Config),
-    TargetArgs = ?config(target_queue_args, Config),
-    with_ch(Config,
-      fun (Ch) ->
-              expect_federation(Ch, <<"upstream">>, <<"fed12.downstream">>, ?EXPECT_FEDERATION_TIMEOUT),
-              expect_federation(Ch, <<"upstream2">>, <<"fed12.downstream">>, ?EXPECT_FEDERATION_TIMEOUT)
-      end, [q(<<"upstream">>, SourceArgs),
-            q(<<"upstream2">>, SourceArgs),
-            q(<<"fed12.downstream">>, TargetArgs)]).
-
 multiple_upstreams_pattern(Config) ->
     set_upstream(Config, 0, <<"local453x">>,
         rabbit_ct_broker_helpers:node_uri(Config, 0), [