AMO - Delete All Partitions From a Database
At first I would go in and change the XMLA script manually to remove those partitions. However, if there were a lot of measuregroups (50-100), this could take upwards of an hour. Being that it was such a pain I probably didn't keep dev and beta as up-to-date as I should have.
An Analysis Services Stored Procedure is perfect to handle this task. Works beautifully and what took me an hour to do before now takes 30 seconds.