The easiest way to hide the store listing is by adding the following code to the style sheet from your theme.
Fix the Directions
If you want the â€œDirectionsâ€ link in the info window to keep working, then make sure that the option to show the directions on google.com/maps is enabled.
The other alternative is to hide the â€œDirectionsâ€ link with a CSS rule.
A future update will include a template that will only show the map and search box.