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

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

Change-Id: Ic7bd24d74228e5a6d8bce837f337a5fed1d480bc