Merge "binderClearBufTest: remove unnecessary flush" am: 253d914cc4 am: 7a1eb4653a am: 3a5bdc42d2

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1552568

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ibea4437764c74247b5984bcf9dd4f5a0b9d5562a