Convert mk files to bp

For car-settings-lib remove all mk files since there are no other
dependencies.

Bug: 135049364
Test: manual and run existing robolectric tests
Change-Id: I9ca2534edc6f4f23718a6818031c4495726ad408
Merged-In: I9ca2534edc6f4f23718a6818031c4495726ad408
Exempt-From-Owner-Approval: cherry-pick
(cherry picked from commit 07f425d4299e160635672cf36d4205a0592c05c7)
7 files changed