Tighten native API surface.

AsynchronousCloseMonitor is moved into libandroidio by
r.android.com/910073 and so libjavacore no longer needs to
be linked to the conscrypt namespace.

Bug: 123744297
Test: m && flashall
Test: atest CtsLibcoreOkHttpTestCases
Test: atest CtsLibcoreTestCases
Change-Id: Id720b59e4ef42a2c0226b497a1cc3c54f7a837d0
3 files changed