diff --git a/src/emqx_cli.erl b/src/emqx_cli.erl
deleted file mode 100644
index 3deb50b07..000000000
--- a/src/emqx_cli.erl
+++ /dev/null
@@ -1,40 +0,0 @@
-%%--------------------------------------------------------------------
-%% Copyright (c) 2019 EMQ Technologies Co., Ltd. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%--------------------------------------------------------------------
-
--module(emqx_cli).
-
--export([ print/1
-        , print/2
-        , usage/1
-        , usage/2
-        ]).
-
-print(Msg) ->
-    io:format(Msg), lists:flatten(io_lib:format("~p", [Msg])).
-
-print(Format, Args) ->
-    io:format(Format, Args), lists:flatten(io_lib:format(Format, Args)).
-
-usage(CmdList) ->
-    lists:map(
-      fun({Cmd, Descr}) ->
-          io:format("~-48s# ~s~n", [Cmd, Descr]),
-          lists:flatten(io_lib:format("~-48s# ~s~n", [Cmd, Descr]))
-      end, CmdList).
-
-usage(Format, Args) ->
-    usage([{Format, Args}]).
-