Since all HALs are in AIDL, HIDL implementation is no longer needed.
Bug: 201253590
Test: on Cuttlefish
Change-Id: Iaefe72760999ace6a9d3dc682a5b457c03a75746
In default implementation, both AIDL HAL and the v2.1 HIDL HAL services
are running in the same process. The HIDL HAL implementation is able to
interact with the AIDL HAL implementation.
Bug: 168111993
Bug: 150192654
Test: on cuttlefish
Change-Id: Ib2770780b62a939f6ca447dfb6a6ab888c526fec