diff --git a/django/contrib/auth/models.py b/django/contrib/auth/models.py
index 1099aa195b..a39165c92c 100644
--- a/django/contrib/auth/models.py
+++ b/django/contrib/auth/models.py
@@ -419,9 +419,6 @@ class AnonymousUser(object):
     def __unicode__(self):
         return 'AnonymousUser'
 
-    def __str__(self):
-        return six.text_type(self).encode('utf-8')
-
     def __eq__(self, other):
         return isinstance(other, self.__class__)
 
diff --git a/django/contrib/databrowse/datastructures.py b/django/contrib/databrowse/datastructures.py
index 810e039894..e48383f438 100644
--- a/django/contrib/databrowse/datastructures.py
+++ b/django/contrib/databrowse/datastructures.py
@@ -97,9 +97,6 @@ class EasyInstance(object):
             return val[:DISPLAY_SIZE] + '...'
         return val
 
-    def __str__(self):
-        return self.__unicode__().encode('utf-8')
-
     def pk(self):
         return self.instance._get_pk_val()
 
diff --git a/django/core/files/base.py b/django/core/files/base.py
index d0b25250a5..87fa8bc8ec 100644
--- a/django/core/files/base.py
+++ b/django/core/files/base.py
@@ -17,9 +17,6 @@ class File(FileProxyMixin):
         if hasattr(file, 'mode'):
             self.mode = file.mode
 
-    def __str__(self):
-        return smart_bytes(self.name or '')
-
     def __unicode__(self):
         return smart_text(self.name or '')
 
diff --git a/django/template/base.py b/django/template/base.py
index 661d8c092a..4dcba6dd2b 100644
--- a/django/template/base.py
+++ b/django/template/base.py
@@ -85,9 +85,6 @@ class VariableDoesNotExist(Exception):
         self.msg = msg
         self.params = params
 
-    def __str__(self):
-        return six.text_type(self).encode('utf-8')
-
     def __unicode__(self):
         return self.msg % tuple([force_text(p, errors='replace')
                                  for p in self.params])
diff --git a/tests/modeltests/field_subclassing/fields.py b/tests/modeltests/field_subclassing/fields.py
index 0d4ff98aa7..47d710717b 100644
--- a/tests/modeltests/field_subclassing/fields.py
+++ b/tests/modeltests/field_subclassing/fields.py
@@ -18,9 +18,6 @@ class Small(object):
     def __unicode__(self):
         return '%s%s' % (force_text(self.first), force_text(self.second))
 
-    def __str__(self):
-        return six.text_type(self).encode('utf-8')
-
 class SmallField(models.Field):
     """
     Turns the "Small" class into a Django field. Because of the similarities
diff --git a/tests/modeltests/serializers/models.py b/tests/modeltests/serializers/models.py
index 9da099c027..ebae7605b4 100644
--- a/tests/modeltests/serializers/models.py
+++ b/tests/modeltests/serializers/models.py
@@ -87,9 +87,6 @@ class Team(object):
     def __unicode__(self):
         raise NotImplementedError("Not so simple")
 
-    def __str__(self):
-        raise NotImplementedError("Not so simple")
-
     def to_string(self):
         return "%s" % self.title