Get rid of the Latin-1 case

Here's a supposition: UTF-8 or bust

src/allmydata/test/cli/test_alias.py

@@ -99,22 +99,6 @@ class ListAlias(GridTestMixin, CLITestMixin, unittest.TestCase):
         )
 
 
-    def test_list_latin_1(self):
-        """
-        An alias composed of all Latin-1-encodeable code points can be created
-        when the active encoding is Latin-1.
-
-        This is very similar to ``test_list_utf_8`` but the assumption of
-        UTF-8 is nearly ubiquitous and explicitly exercising the codepaths
-        with a UTF-8-incompatible encoding helps flush out unintentional UTF-8
-        assumptions.
-        """
-        return self._check_create_alias(
-            u"taho\N{LATIN SMALL LETTER E WITH ACUTE}",
-            encoding="latin-1",
-        )
-
-
     def test_list_utf_8(self):
         """
         An alias composed of all UTF-8-encodeable code points can be created when