Anycubic i3 MEGA - rpi camera bed mount

Clearminds bed mount didn't fit on my bed (4 mm thick). Additionally shifted support for cable for faster print with less support. Back of camera case didn't fit either, had to use file and knife. Therefore removed some material.

### Update 3/11/19
Added hole to the tilt arm for an M2 skrew to reduce the wobbling of the camera when the bed moves.