in the map js file, find the line that initializes the directions:
directions.load('from: ' + fromAddress.full + ' to: ' + address_0.full);
wagmp_map_1_obj.directions = directions;
and comment it:
//directions.load('from: ' + fromAddress.full + ' to: ' + address_0.full);
//wagmp_map_1_obj.directions = directions;