fix event_period_settings

apps/iot/src/iot_event_period_settings.erl

@@ -73,9 +73,7 @@ start_link() ->
     {stop, Reason :: term()} | ignore).
 init([]) ->
     ets:new(?TAB_NAME, [public, set, named_table, {keypos, 2}, {read_concurrency, true}]),
-    catch settings(),
-    erlang:start_timer(?UPDATE_TICKER * 1000, self(), update_ticker),
-
+    erlang:start_timer(0, self(), update_ticker),
     {ok, #state{}}.
 
 %% @private