Deprecate SUW lib platform variant

It's becoming too hard to develop without support lib with the lack
of recycler view and other newer support lib features. Please migrate
to common-gingerbread at your convenience.

Test: Builds. This change should be a no-op (simply renaming files)
Bug: 33298315
Change-Id: I2e2a23ae5c1f554d8c62728b60d3ba59a60e458c