Android patch: Disable ar_XB in cintltst.tsutil.cldrtest.VerifyTranslation

ar_XB is generated and used by developers only, not by mass users.

The error message is not very alarming because I think not all
characters used in a locale have to be in exemplar characters.
More investigation is needed.

Test: atest CtsIcu4cTestCases
Change-Id: I5d517961d38a8e7ca6d115de42eda66d31a07fe1
1 file changed