1 files changed, 1 insertions, 4 deletions
diff --git a/django/db/migrations/operations/base.py b/django/db/migrations/operations/base.py
index 40128174c7..7d4dff2597 100644
--- a/django/db/migrations/operations/base.py
+++ b/django/db/migrations/operations/base.py
@@ -1,8 +1,7 @@
 from django.db import router
-from django.utils.deprecation import DeprecationForHistoricalMigrationMixin
 
 
-class Operation(DeprecationForHistoricalMigrationMixin):
+class Operation:
     """
     Base class for migration operations.
 
@@ -34,8 +33,6 @@ class Operation(DeprecationForHistoricalMigrationMixin):
 
     serialization_expand_args = []
 
-    check_type = "migrations"
-
     def __new__(cls, *args, **kwargs):
         # We capture the arguments to make returning them trivial
         self = object.__new__(cls)