Revert "Listen to brigtness updates to update brightness summary."

This reverts commit 4b95879634639e9d3ff81262a87478f081866ca9.

Change-Id: I13de29b0e42a09f6b3618826d7eb2a9ed00a54d8
Merged-In: I09fd9c843a4d32a131b87cd638785af552f81507
5 files changed