Revert "Set overlayable to CarLauncher" am: 2d45aa8ec8

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Car/Launcher/+/11887623

Change-Id: Ibed731f450f848c0b5baed16668b7ec5c37f917f
tree: 48377136324aa98f6a6110816b9ae3b4c5183902
  1. res/
  2. src/
  3. Android.bp
  4. AndroidManifest.xml
  5. OWNERS