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

(cherry picked from commit cf7fbcd0)

Change-Id: I1d28f91cfca098ccdcd62e88bb486b433d9c29d8