fixup! Fixed #28184 -- Allowed using callable as FileField and ImageF…

…ield storage.

docs/topics/files.txt

@@ -230,17 +230,3 @@ For example::
 
     class MyModel(models.Model):
         my_file = models.FileField(storage=select_storage)
-
-A ``Storage`` subclass implementing ``__call__()`` to return ``self`` may use
-this to feature to perform customization::
-
-    class CustomStorage(Storage):
-        # Adding a call method makes the instance callable.
-        def __call__(self):
-            if os.getenv('IS_PRODUCTION', False):
-                self.location = '/overridden/path/'
-            return self
-
-
-    class MyModel(models.Model):
-        my_file = models.FileField(storage=CustomStorage())