Use new UnsupportedAppUsage annotation.

Existing annotations in libcore/ and frameworks/ will deleted after the migration. This also means that any java library that compiles @UnsupportedAppUsage requires a direct dependency on "unsupportedappusage" java_library.

Bug: 145132366
Test: m && diff unsupportedappusage_index.csv \
      git diff HEAD^ HEAD | grep '^[+-][^+-]' | grep -v '.import'
Change-Id: I087bb1cecbe59f1cf0c2e770c735d7a433722c6f