Lose insmod/lsmod/rmmod to toybox.

Change-Id: Ia654cdca14a4fda958a406f5e6ccd0919ce88a8f
Remove long-dead readtty.

Change-Id: I15ae14542214a3802d43892da0d03cfb33e63c96
Merge "Lose insmod/lsmod/rmmod to toybox."
Merge "Remove long-dead readtty."
Remove dead tools.

These have all been obsolete since we first moved to git!

Change-Id: Ie5bfc1b30000930ef6a604b4313ff7af1b7c4573
Use LOCAL_POST_LINK_CMD to install toolbox symlinks

It's simpler; Also whenever toolbox is updated the symlinks get
recreated.

Change-Id: I03fb61a5e0f14fd4ed23680dd6db87eed5b46787
Merge "Remove dead tools."
Merge "Use LOCAL_POST_LINK_CMD to install toolbox symlinks"