Remove obsolete concurrent access test.

This failure mode we're testing for is no longer possible because
we use ICU4J. Moreover, this seems to trip up the CTS test runner
which flags exceptions in the logs from other threads as failures.

If there's a good reason to keep this, we can always add an
UncaughtExceptionHandler that doesn't log to all worker threads.

Change-Id: I23eeeb01e4a9c0987e30e54a2d84cc5d4f79a6c0
1 file changed