Revert "Create headers library for libvibrator"

Revert submission 13163663-libvibrator-headers

Reason for revert: DroidMonitor-triggered revert due to breakage https://android-build.googleplex.com/builds/submitted/7083529/sdk_mac/latest
Bug: b/177609603

Reverted Changes:
Iec3ae8142:Use headers library for libvibrator
I1d0653e90:Create headers library for libvibrator

Change-Id: I8c536fbece42bab7c5a0db218edb4471a31f939a