Remove duplicate CTS tests from libcore cts packages.

The catch all "org" package was catching several thousand
org.apache.harmony.tests.* tests that are already covered by
other packages. Replace the catch-all org.* with specific prefixes.

Needs additional support in CollectAllTests to handle multiple
prefixes. This is implemented in the companion change.

bug: 20862863
Change-Id: I44348052d20312d478bdbf6df0e561db63e18cd8