feat: update test_hashlib fro CPython3.11 (RustPython#5053)

Co-authored-by: zhangbl <zhangbl@greatld.com>

Author: Reid00

Lib/hashlib.py

@@ -114,8 +114,8 @@ def __get_builtin_constructor(name):
             cache['shake_128'] = _sha3.shake_128
             cache['shake_256'] = _sha3.shake_256
     except ImportError:
-        pass  # no extension module, this hash is unsupported.'''
-    
+        pass  # no extension module, this hash is unsupported.
+
     constructor = cache.get(name)
     if constructor is not None:
         return constructor

Lib/test/test_hashlib.py

@@ -400,9 +400,6 @@ def check_file_digest(self, name, data, hexdigest):
             for digest in digests:
                 buf = io.BytesIO(data)
                 buf.seek(0)
-                '''self.assertEqual(
-                    dir(hashlib), None
-                )'''
                 self.assertEqual(
                     hashlib.file_digest(buf, digest).hexdigest(), hexdigest
                 )