diff --git a/django/utils/functional.py b/django/utils/functional.py
index 4220cbc4b6..be5fac23ad 100644
--- a/django/utils/functional.py
+++ b/django/utils/functional.py
@@ -126,8 +126,6 @@ def lazy(func, *resultclasses):
                     "Cannot call lazy() with both bytes and text return types."
                 )
 
-            if cls._delegate_bytes:
-                cls.__bytes__ = cls.__bytes_cast
 
         @classmethod
         def __promise__(cls, method_name):
@@ -140,9 +138,6 @@ def lazy(func, *resultclasses):
 
             return __wrapper__
 
-        def __bytes_cast(self):
-            return bytes(func(*self.__args, **self.__kw))
-
         def __cast(self):
             return func(*self.__args, **self.__kw)