Merge "delete HIDL adapters" am: 7b4cdf7452 am: 38a1d26975 am: b0d0e8d94e am: 76cb172edc

Original change: https://android-review.googlesource.com/c/platform/system/libhidl/+/1877956

Change-Id: I0e41d11f5546f0348de7a6c1a8c14d7d0bc3f55b