gh-143990: Fix the 3.15 backport of GH-153267

Drop the assertion in test_create_from_named_font that explicit options
override the copied font settings: that behavior was added by GH-152025
and is not in 3.15, where options are ignored when a font is specified.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: serhiy-storchaka

Lib/test/test_tkinter/test_font.py

@@ -57,9 +57,7 @@ def test_create_from_named_font(self):
                 self.assertEqual(f.cget('size'), sizetype(-20))
                 self.assertEqual(f.actual('family'), named.actual('family'))
                 self.assertEqual(f.actual('weight'), 'bold')
-        # Explicit options still override the copied settings.
-        f = font.Font(root=self.root, font=named, size=30)
-        self.assertEqual(f.cget('size'), sizetype(30))
+        # (Options overriding the given font are only supported since 3.16.)
 
     def test_create_from_description(self):
         # gh-143990: a font created from a font description is resolved via