Revert "IPCThreadState: Add a public method to probe is a hwbinder called is being served."

This reverts commit b178762cf7a93842de56fa0d7a153e0694543821.

Reason for revert: This breaks framework tests and blocks presubmit

Change-Id: I9546c267d14390684f488542e92d7ac64c612488
3 files changed