Remove method used in single place

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

weblate/trans/models/translation.py

@@ -1239,12 +1239,3 @@ class Translation(models.Model, URLMixin, PercentMixin, LoggerMixin):
         Returns URL of exported git repository.
         '''
         return self.subproject.get_export_url()
-
-    def only_vote_suggestions(self):
-        """
-        Whether we can vote for suggestions.
-        """
-        return (
-            self.subproject.suggestion_voting and
-            self.subproject.suggestion_autoaccept > 0
-        )

weblate/trans/permissions.py

@@ -34,8 +34,9 @@ def can_edit(user, translation, permission):
         return False
     if translation.is_template() and not user.has_perm('trans.save_template'):
         return False
-    if (translation.only_vote_suggestions() and not
-            user.has_perm('trans.override_suggestion')):
+    if (translation.subproject.suggestion_voting and
+            translation.subproject.suggestion_autoaccept > 0 and
+            not user.has_perm('trans.override_suggestion')):
         return False
     return True