tests: Disable float/cmath_fun.py for native emitter.

tests/run-tests

@@ -80,6 +80,7 @@ def run_tests(pyb, tests, args):
     if args.emit == 'native':
         skip_tests.update({'basics/%s.py' % t for t in 'bytes_gen class_store_class class_super class_super_object closure1 closure2 closure_defargs del_deref del_local fun3 fun_calldblstar fun_callstar fun_callstardblstar fun_defargs fun_defargs2 fun_kwargs fun_kwonly fun_kwonlydef fun_kwvarargs fun_varargs gen_yield_from gen_yield_from_close gen_yield_from_ducktype gen_yield_from_exc gen_yield_from_iter gen_yield_from_send gen_yield_from_throw generator1 generator2 generator_args generator_close generator_closure generator_exc generator_return generator_send globals_del string_format string_join subclass_native2_list subclass_native2_tuple try_finally_loops try_finally_return try_reraise try_reraise2 unboundlocal with1 with_break with_continue with_return'.split()})
         skip_tests.add('float/string_format.py')
+        skip_tests.add('float/cmath_fun.py') # requires f(*args) support
         skip_tests.add('import/gen_context.py')
         skip_tests.add('io/file_with.py')
         skip_tests.add('micropython/heapalloc.py')