remove console backend due to avoid queue backups

core/sys.config

@@ -1,8 +1,7 @@
 [
  {lager, [
           {handlers, [
-                      {lager_console_backend, info}
-                      ,{lager_file_backend, [
+                      {lager_file_backend, [
                                              {file, "log/error.log"}, {level, error}, {size, 10485760}, {date, "$D0"}, {count, 5}
                                              ,{formatter, lager_default_formatter}
                                              ,{formatter_config, [time," [",severity,"] ", "|", {callid, <<"0000000000">>}, "|", module, ":", line, " (",pid, ") ", message, "\n"]}