i3bar: No reason to get_workspaces after output event

got_output_reply() requests this information anyway and if it is
received before the output reply, the information will be erased by
get_output_reply().

i3bar/src/ipc.c

@@ -155,9 +155,6 @@ static void got_workspace_event(char *event) {
 static void got_output_event(char *event) {
     DLOG("Got output event!\n");
     i3_send_msg(I3_IPC_MESSAGE_TYPE_GET_OUTPUTS, NULL);
-    if (!config.disable_ws) {
-        i3_send_msg(I3_IPC_MESSAGE_TYPE_GET_WORKSPACES, NULL);
-    }
 }
 
 /*