Migrate SystemArrayCopyPerfTest to BenchmarkRule

This is part of a larger migration effort to move all AndroidX
benchmarks to use BenchmarkRule instead of PerfStatusReporter. I'm starting with this singular benchmark to ensure it works and if there is no issue will then migrate more tests.

Change-Id: I60a5ea3a416f7e83695c487fee8dcfbcd4a34028
1 file changed