BoundObject: fix crash on destruction
BoundObject: fix crash on destruction

Do not remove self from our ObjectHost. ObjectHost owns its values, so if we
reached our destructor, it means that the ObjectHost does not own us anymore, no
need to remove ourself from it.

Change-Id: I935a2b9316f3b813b9db96a5acf7f87f55eac889
Reviewed-on: http://gerrit.aldebaran.lan/66579
Tested-by: gerrit
Reviewed-by: pdaouadi <fc1eb3334d3fdad315bae23aa166bc70bd434067@aldebaran-robotics.com>

aldebaran/libqi,aldebaran/libqi,aldebaran/libqi