You can accomplish this by customizing the iOS Container. There is a customization point in CustomizationHelper.m called IOS_CUSTOMIZATION_POINT_IPAD_LIST_VIEW that controls this behaviour. Return YES from this function to hide the listview on iPad.
The 2.2.4 version of the HWC currently on the AppStore returns NO from this function by default.
In the upcoming 2.3.3 release, this will return YES (e.g. hide the listview) by default on iPad.
Thanks,
Andrew.