diff --git a/src/emqx_acl_mod.erl b/src/emqx_acl_mod.erl
deleted file mode 100644
index c75532441..000000000
--- a/src/emqx_acl_mod.erl
+++ /dev/null
@@ -1,44 +0,0 @@
-%% Copyright (c) 2013-2019 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_acl_mod).
-
--include("emqx.hrl").
-
-%%--------------------------------------------------------------------
-%% ACL behavihour
-%%--------------------------------------------------------------------
-
--ifdef(use_specs).
-
--callback(init(AclOpts :: list()) -> {ok, State :: term()}).
-
--callback(check_acl({credentials(), pubsub(), topic()}, State :: term())
-          -> allow | deny | ignore).
-
--callback(reload_acl(State :: term()) -> ok | {error, term()}).
-
--callback(description() -> string()).
-
--else.
-
--export([behaviour_info/1]).
-
-behaviour_info(callbacks) ->
-    [{init, 1}, {check_acl, 2}, {reload_acl, 1}, {description, 0}];
-behaviour_info(_Other) ->
-    undefined.
-
--endif.
-
diff --git a/src/emqx_auth_mod.erl b/src/emqx_auth_mod.erl
deleted file mode 100644
index 92bb059ad..000000000
--- a/src/emqx_auth_mod.erl
+++ /dev/null
@@ -1,47 +0,0 @@
-%% Copyright (c) 2013-2019 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_auth_mod).
-
--include("emqx.hrl").
-
-%%--------------------------------------------------------------------
-%% Authentication behavihour
-%%--------------------------------------------------------------------
-
--ifdef(use_specs).
-
--callback(init(AuthOpts :: list()) -> {ok, State :: term()}).
-
--callback(check(credentials(), password(), State :: term())
-          -> ok
-          | {ok, boolean()}
-          | {ok, map()}
-          | {continue, map()}
-          | ignore
-          | {error, term()}).
-
--callback(description() -> string()).
-
--else.
-
--export([behaviour_info/1]).
-
-behaviour_info(callbacks) ->
-    [{init, 1}, {check, 3}, {description, 0}];
-behaviour_info(_Other) ->
-    undefined.
-
--endif.
-