For my market, 90% of my app's users are 4.0+. 97% of all sessions are 4.0+. I still support & test pre-4.0, but I'm starting to consider options for spending

For my market, 90% of my app's users are 4.0+. 97% of all sessions are 4.0+. I still support & test pre-4.0, but I'm starting to consider options for spending less time on Gingerbread support. Progressive enhancement helps (we just don't do a lot of things on Gingerbread at all), but it still clutters up the code. Even a few months ago I couldn't imagine dropping Gingerbread support, but I have seen almost no growth in Gingerbread users over the last 3-6 months.