hwbinder: remove blockUntilThreadAvailable am: 87db54cf6a am: 579d0fdd06 am: eeb4f36fcf am: 1042898808 am: abae479aa2

Original change: https://android-review.googlesource.com/c/platform/system/libhwbinder/+/1446175

Change-Id: Id6d36292b251b6d1ec86fa23f2f951f29db38663