Revert "Error handling for idna encoding"

This reverts commit 10034526a1.

core/admin/mailu/models.py

@@ -27,10 +27,7 @@ class IdnaDomain(db.TypeDecorator):
     impl = db.String(80)
 
     def process_bind_param(self, value, dialect):
-        try:
-            return idna.encode(value).decode("ascii").lower()
-        except ValueError:
-            pass
+        return idna.encode(value).decode("ascii").lower()
 
     def process_result_value(self, value, dialect):
         return idna.decode(value)

towncrier/newsfragments/1087.bugfix

@@ -1 +0,0 @@
-Error handling in idna encoding