Future: remove undefined method
Future: remove undefined method

I tried to use it only to find out it is declared but undefined. This is
not acceptable for the public API.

Change-Id: I6e8bd97c432d34f0ae2c42918c2a68374f721d91
Reviewed-on: http://gerrit.aldebaran.lan/82932
Reviewed-by: jmonnon <8898eaf233516e520f996a244ca8a12d20f948b1@aldebaran.com>
Tested-by: vpaleologue <cb19838a79eb484e12a6960acfbf7c16dfdb80d9@aldebaran-robotics.com>

aldebaran/libqi,aldebaran/libqi,aldebaran/libqi