Partial revert "Add overlayable configurator resources"

This reverts commit 639393e1e6bd87b21bab89b30c3da0f1431d80a1.
This revert does not change a refactor of the OMSImpl tests done in
the reverted commit.

Change-Id: Ic916ab79278f9512ee91789c5e62c8461c407581
Bug: 154610560
7 files changed