remove too-verbose comments

Co-authored-by: Bénédikt Tran <[email protected]>

Author: bkjoh

Lib/test/test_getpass.py

@@ -202,8 +202,7 @@ def test_control_chars_with_echo_char(self):
 
 
 class GetpassEchoCharTest(unittest.TestCase):
-    # Tests for the `echo_char` parameter of `getpass.getpass()`
-    # Successful Validation Case(s)
+
     def test_accepts_none(self):
         getpass._check_echo_char(None)