diff --git a/zerver/lib/user_groups.py b/zerver/lib/user_groups.py
index 7e18412503..9f42aab098 100644
--- a/zerver/lib/user_groups.py
+++ b/zerver/lib/user_groups.py
@@ -22,11 +22,6 @@ def access_user_group_by_id(user_group_id: int, user_profile: UserProfile) -> Us
     return user_group
 
 
-def user_groups_in_realm(realm: Realm) -> List[UserGroup]:
-    user_groups = UserGroup.objects.filter(realm=realm)
-    return list(user_groups)
-
-
 def user_groups_in_realm_serialized(realm: Realm) -> List[Dict[str, Any]]:
     """This function is used in do_events_register code path so this code
     should be performant.  We need to do 2 database queries because
diff --git a/zerver/tests/test_user_groups.py b/zerver/tests/test_user_groups.py
index 9ec33b366c..a77d6666ab 100644
--- a/zerver/tests/test_user_groups.py
+++ b/zerver/tests/test_user_groups.py
@@ -14,7 +14,6 @@ from zerver.lib.user_groups import (
     create_user_group,
     get_memberships_of_users,
     get_user_groups,
-    user_groups_in_realm,
     user_groups_in_realm_serialized,
 )
 from zerver.models import Realm, UserGroup, UserGroupMembership, UserProfile, get_realm
@@ -27,15 +26,6 @@ class UserGroupTestCase(ZulipTestCase):
         members = [self.example_user("othello")]
         return create_user_group(group_name, members, realm)
 
-    def test_user_groups_in_realm(self) -> None:
-        realm = get_realm("zulip")
-        self.assert_length(user_groups_in_realm(realm), 1)
-        self.create_user_group_for_test("support")
-        user_groups = user_groups_in_realm(realm)
-        self.assert_length(user_groups, 2)
-        names = {ug.name for ug in user_groups}
-        self.assertEqual(names, {"hamletcharacters", "support"})
-
     def test_user_groups_in_realm_serialized(self) -> None:
         realm = get_realm("zulip")
         user_group = UserGroup.objects.first()