[nearby][clean up] Remove HalfSheetUX from apex am: ca314c2d71 am: eb8375cd6b am: 2c19d3d998 am: 604950838b

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2727074

Change-Id: I917db8d769cfc251ba3e743ee10dc7d81169bebf
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>