No need to explicitely ignore n/a

Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/trans/checks/same.py

@@ -375,7 +375,6 @@ SAME_BLACKLIST = frozenset((
     'multiplayer',
     'musicbottle',
     'mv',
-    'n/a',
     'name',
     'namecoin',
     'namecoins',

weblate/trans/tests/test_same_checks.py

@@ -107,6 +107,15 @@ class SameCheckTest(CheckTestCase):
             )
         )
 
+        self.do_test(
+            False,
+            (
+                'n/a mm',
+                'n/a mm',
+                '',
+            )
+        )
+
     def test_same_copyright(self):
         self.do_test(
             False,