remove special fallback logic for importing drake lcmtypes
remove special fallback logic for importing drake lcmtypes

this fallback is unused now

patmarion/director,openhumanoids/director,openhumanoids/director,mitdrc/director,patmarion/director,manuelli/director,RobotLocomotion/director,manuelli/director,patmarion/director,manuelli/director,manuelli/director,manuelli/director,openhumanoids/director,patmarion/director,patmarion/director,RobotLocomotion/director,mitdrc/director,mitdrc/director,openhumanoids/director,RobotLocomotion/director,RobotLocomotion/director,mitdrc/director,openhumanoids/director,mitdrc/director,RobotLocomotion/director