Lose ln to toybox.

I accidentally enabled the toybox ln in my original commit, so which ln
you've been running for the last few weeks has depended on which directory
you built more recently...

Change-Id: If73783477aa4eb4d058d6e170d6291ba0d9c5f40
Merge "Lose ln to toybox."
Lose cp to toybox.

Change-Id: Idfe52737093d243ae2dcb054f686f6d6af0c2de6
Merge "Lose cp to toybox."