Deprecate android.text.AndroidCharacter

AndroidCharacter was added to compensate for limitations in
java.lang.Character, but it has been outdated and its functionality
is provided with a much better API by android.icu.lang.UCharacter.

Bug: 32551718
Test: cts-tradefed run cts-dev --module CtsTextTestCases --test android.text.cts.AndroidCharacterTest
Change-Id: Iec1969dc5787a4ebb0e68cdc213d3d0cdc3b2d0d
5 files changed