Remove incomplete fix and temporarily disable new tests.

Author: bitdancer

Lib/email/_header_value_parser.py

@@ -2885,17 +2885,6 @@ def _refold_parse_tree(parse_tree, *, policy):
             last_word_is_ew = False
             continue
 
-        if want_encoding and part.token_type == 'addr-spec':
-            # RFC2047 forbids encoded-word in any part of an addr-spec.
-            if charset == 'unknown-8bit':
-                # Non-ASCII addr-spec came from parsed message; leave unchanged.
-                want_encoding = False
-            else:
-                raise errors.InvalidMailboxError(
-                    f"Non-ASCII mailbox '{part}' is invalid"
-                    " under current policy setting (utf8=False)"
-                )
-
         if want_encoding and not wrap_as_ew_blocked:
             if not part.as_ew_allowed:
                 want_encoding = False

Lib/test/test_email/test_generator.py

@@ -296,7 +296,8 @@ def test_keep_long_encoded_newlines(self):
         g.flatten(msg)
         self.assertEqual(s.getvalue(), self.typ(expected))
 
-    def test_non_ascii_addr_spec_raises(self):
+    # XXX renable after fix.
+    def xest_non_ascii_addr_spec_raises(self):
         # RFC2047 encoded-word is not permitted in any part of an addr-spec.
         # (See also test_non_ascii_addr_spec_preserved below.)
         g = self.genclass(self.ioclass(), policy=self.policy.clone(utf8=False))
@@ -579,7 +580,8 @@ def test_smtp_policy(self):
         g.flatten(msg)
         self.assertEqual(s.getvalue(), expected)
 
-    def test_non_ascii_addr_spec_preserved(self):
+    # XXX renable after fix.
+    def xest_non_ascii_addr_spec_preserved(self):
         # A defective non-ASCII addr-spec parsed from the original
         # message is left unchanged when flattening.
         # (See also test_non_ascii_addr_spec_raises above.)