gh-143990: Drop a redundant comment in the 3.15 backport

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

Author: serhiy-storchaka

Lib/test/test_tkinter/test_font.py

@@ -57,7 +57,6 @@ 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')
-        # (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