Update listener.api configuration

etc/emq.conf

@@ -447,15 +447,15 @@ listener.wss.external.certfile = {{ platform_etc_dir }}/certs/cert.pem
 ## listener.wss.external.fail_if_no_peer_cert = true
 
 ##--------------------------------------------------------------------
-## External MQTT/REST API Listener
+## HTTP Management API Listener
 
-listener.api.external = 127.0.0.1:8080
+listener.api.mgmt = 127.0.0.1:8080
 
-listener.api.external.acceptors = 4
+listener.api.mgmt.acceptors = 4
 
-listener.api.external.max_clients = 64
+listener.api.mgmt.max_clients = 64
 
-listener.api.external.access.1 = allow all
+listener.api.mgmt.access.1 = allow all
 
 ##-------------------------------------------------------------------
 ## System Monitor

priv/emq.schema

@@ -1048,14 +1048,6 @@ end}.
   {datatype, integer}
 ]}.
 
-{mapping, "listener.api.$name.zone", "emqttd.listeners", [
-  {datatype, string}
-]}.
-
-{mapping, "listener.api.$name.mountpoint", "emqttd.listeners", [
-  {datatype, string}
-]}.
-
 {mapping, "listener.api.$name.rate_limit", "emqttd.listeners", [
   {datatype, string}
 ]}.