send less data, no people

src/main.cpp

@@ -28,7 +28,6 @@ websockets::TestProtocol<User> default_protocol{
 	// write (will always come after receive)
 	[](User& user, basic_websocket_info) -> std::string{
 		js::Object ret;
-		ret["people"] = ptrvector_to_json(app->people_online);
 		ret["balls"] = vector_to_json(app->sim.balls);
 		ret["lines"] = vector_to_json(app->sim.lines);
 		return write_json(ret);