remove wake build script.

[sequencer]

Type of change: other enhancement
Impact: no functional change
Development Phase: implementation

[davidmlw]

What is the consideration of removing build.wake? It is a cool feature. @sequencer @jackkoenig

[sequencer]

There is a big maintain burden, and leak of users, so we choose to remove it.
In the future, a better way is splitting RC and switching to ivy-based compiling strategy.

[davidmlw]

I see. Wish to see ivy- and mill-based flow. I would like to offer help on wake based scripts, when the RC is splitted.