removes unused test code

deps/rabbitmq_sharding/test/src/rabbit_sharding_test.erl

@@ -10,7 +10,7 @@
 
 -import(rabbit_sharding_test_util,
         [set_param/3, clear_param/2, set_pol/3, clear_pol/1,
-         policy/1, start_other_node/1, cluster_other_node/2,
+         start_other_node/1, cluster_other_node/2,
          reset_other_node/1, stop_other_node/1, xr/1, qr/1]).
 
 -import(rabbit_sharding_util, [a2b/1, exchange_bin/1]).

deps/rabbitmq_sharding/test/src/rabbit_sharding_test_util.erl

@@ -78,9 +78,6 @@ execute(Cmd) ->
         _         -> exit({command_failed, Cmd, Res})
     end.
 
-policy(ShardingDef) ->
-    rabbit_misc:format("{\"sharding-definition\": \"~s\"}", [ShardingDef]).
-
 plugin_dir() ->
     {ok, [[File]]} = init:get_argument(config),
     filename:dirname(filename:dirname(File)).