Revert "MediaRouter2: Create MediaRouter2A.java for rewriting MediaRouter2"

This reverts commit 3d60c71a2a4894e649f98ed66332610b0066bd1e.

Reason for revert: Decided to work on current MediaRouter2.

Change-Id: Iff87c027ab2ae5b1b331aa743b5d2447a44d7e69
2 files changed