Revert "setup robolectric for sysui"

This reverts commit fac84d7fdf3720724e21af59eb9776c09612689c.

Reason for revert: Causes an exception in errorprone. Example log:
https://android-build.googleplex.com/builds/pending/P44757438/errorprone/latest/view/logs/error.log

Change-Id: I9fe91baf83641ae0c2e94b5bb049cb99c39cfde6
4 files changed