3 uses-package com.google.android.mapsHowever my app wasn't using it, and a search of my code didn't reveal any uses of it either.
It turns out that, because I was using RoboGuice, which has a MapActivity, the BlackBerry packager was picking that up, even though I wasn't using it.
The only solution I could think of was to unpack the roboguice jar, delete the MapActivity class, then repackage it. Then the BlackBerry packager was happy!
Hope this helps someone