* Replace islamicc with islamic-umalqura
Per discussion in #743, it's implementation-dependent how ismalicc is
canonicalized. However, 'islamic-umalqura' should be treated the same
way by all implementations.
* Remove ar-ma-u-ca-islamic-umalqura per discussion
This harness function is not necessary in the majority of cases in which
it is used. Remove its usage to simplify tests and decrease the amount
of domain-specific knowledge necessary to contribute to the test suite.
Persist the harness function itself for use by future tests for ES2015
modules (such a helper is necessary for tests that are interpreted as
module code).
