gh-70999: trim verbose test comments per review

Author: nikolauspschuetz

Lib/test/test_configparser.py

@@ -1348,14 +1348,9 @@ def test_get_with_vars_nested(self):
         """).strip())
 
         eq = self.assertEqual
-        # Directly referencing the overridden option already worked.
         eq(cf.get('section', 'b', vars={'c': 'OVERRIDE'}), 'OVERRIDE')
-        # Reaching it through another same-section option must too.
         eq(cf.get('section', 'a', vars={'c': 'OVERRIDE'}), 'OVERRIDE')
-        # Without an override the configured value is still used.
         eq(cf.get('section', 'a'), 'default')
-        # ``vars`` are scoped to the requested section and must not leak
-        # into a different section reached via ``${section:option}``.
         eq(cf.get('cross', 'via', vars={'c': 'OVERRIDE'}), 'default')