Revert "RpcSession attaches/detaches JVM for Java thread"

Revert submission 1751551-rpc_binder_java_threads

Reason for revert: breaks build
Reverted Changes:
Ifedd34a8c:AndroidRuntime: Expose javaAttachThread / javaDeta...
I23f171dd1:RpcSession attaches/detaches JVM for Java thread

Change-Id: I60fe305224f0341578af40078c7725c32152144b
3 files changed