Remove dependency on car-androidx-room

Use prebuilt directly since it's available now.

Bug: 138749761
Test: it builds
Change-Id: If354acbd4db14deb465fd9ca4c70bdbf07eb2e4a
1 file changed
tree: ead81e05f358803fd582e88aabf14bb2ad36f930
  1. res/
  2. src/
  3. tests/
  4. Android.bp
  5. AndroidManifest.xml
  6. OWNERS
  7. PREUPLOAD.cfg