Android Leaderboards - How to Disable the "Today", "This Week" and "All Time" options,

I have built an incremental leaderboard as stated in this question

The problem is that the Android leaderboard shows options for "Today", "This week" and "All the time". Since my leaderboard is incremental, it makes no sense for me to have these options, and therefore I want to turn them off.

Any pointers would be much appreciated.