diff --git a/apps/emqx_management/src/emqx_mgmt.erl b/apps/emqx_management/src/emqx_mgmt.erl
index fecf77070..b460b69b4 100644
--- a/apps/emqx_management/src/emqx_mgmt.erl
+++ b/apps/emqx_management/src/emqx_mgmt.erl
@@ -93,23 +93,13 @@
         ]).
 
 %% Common Table API
--export([ item/2
-        , max_row_limit/0
+-export([ max_row_limit/0
         ]).
 
--export([ return/0
-        , return/1]).
-
 -define(APP, emqx_management).
 
 -elvis([{elvis_style, god_modules, disable}]).
 
-%% TODO: remove these function after all api use minirest version 1.X
-return() ->
-    ok.
-return(_Response) ->
-    ok.
-
 %%--------------------------------------------------------------------
 %% Node Info
 %%--------------------------------------------------------------------
@@ -331,7 +321,8 @@ call_client(Node, ClientId, Req) ->
 do_list_subscriptions() ->
     case check_row_limit([mqtt_subproperty]) of
         false -> throw(max_row_limit);
-        ok    -> [item(subscription, Sub) || Sub <- ets:tab2list(mqtt_subproperty)]
+        ok    -> [#{topic => Topic, clientid => ClientId, options => Options}
+                     || {{Topic, ClientId}, Options} <- ets:tab2list(mqtt_subproperty)]
     end.
 
 list_subscriptions(Node) ->
@@ -452,19 +443,6 @@ create_banned(Banned) ->
 delete_banned(Who) ->
     emqx_banned:delete(Who).
 
-%%--------------------------------------------------------------------
-%% Common Table API
-%%--------------------------------------------------------------------
-
-item(subscription, {{Topic, ClientId}, Options}) ->
-    #{topic => Topic, clientid => ClientId, options => Options};
-
-    %% TODO: may be delete
-item(route, #route{topic = Topic, dest = Node}) ->
-    #{topic => Topic, node => Node};
-item(route, {Topic, Node}) ->
-    #{topic => Topic, node => Node}.
-
 %%--------------------------------------------------------------------
 %% Internal Functions.
 %%--------------------------------------------------------------------