Reduce jacoco blacklist for libcore.

This takes advantage of the reduction in runtime dependencies of the
instrumentation code in http://ag/3492180. Notably, it unblacklists
the whole of java.io, java.nio and its subpackages,
java.util.concurrent, and much of java.util. Only parts of java.util
and the whole of java.lang remain blacklisted.

Bug: 64836607
Test: `cts-tradefed run cts-dev -m CtsLibcoreTestCases --test-arg com.android.compatibility.testtype.LibcoreTest:coverage:true` on a build with EMMA_INSTRUMENT=true and EMMA_INSTRUMENT_FRAMEWORK=true
Change-Id: Iec791a5d31e0e265e666b3b1110298822e49fd53
1 file changed