Revert "robotic_arm/simulink: new simulink version 1.67 - updated collision avoidance by Akash."

This reverts commit a81b4d5936b9c47039af190a80f4fdf705a367c7.

This needs more throughout testing, collsion found when tested.
snark-ur5-status: added 'laser_position' stub data. snark-ur5-control: auto_init moves arm to home position on success, daemon dies if robot arm is offline, you cannot power on the robot arm if it is not in the no_power state ( and joints in power_off ).