Not that I'm aware of... I've looked before and concluded that the only way to get in would be to damage the case beyond use. I'd be interested if anyone could say they'd done it... and how.
My /6 does alright without one. I used the ball joint ends from the dead one that was on my bike to make a remote shifter extension when I modded a right side footpeg so I could have same-set pegs.
It would seem that BMW agreed they weren't strictly necessary, as the /7 I'm working on didn't come with one.
Call me Mel. Some years ago- never mind how long precisely- having little or no money in my purse, and nothing particular to interest me at home, I thought I would ride about a little and see the other parts of the world.