build: get rid of the sparse expand stuff

* i don't see a reason why we are doing this because we never deal
with flashing system img rawly
* This will put useless write on ssd..
* we don't have space on ssd

Change-Id: Icd53d161b8515f5eca238b98ad68515d69caa34f
Signed-off-by: Chet Kener <Cl3Kener@gmail.com>
lets make the lunch list look a little neater

It's very simple, but with more and more devices coming in, a long list won't cut it
There are probably better ways of doing this, feel free to comment

Change-Id: I9bd1fef920f985a133c882df9987b6be29dbc7b8
Signed-off-by: Chet Kener <Cl3Kener@gmail.com>