1 files changed, 0 insertions, 14 deletions
diff --git a/django/db/backends/mysql/operations.py b/django/db/backends/mysql/operations.py
index 61fc9da3f4..7dee707820 100644
--- a/django/db/backends/mysql/operations.py
+++ b/django/db/backends/mysql/operations.py
@@ -3,7 +3,6 @@ import uuid
 from django.conf import settings
 from django.db.backends.base.operations import BaseDatabaseOperations
 from django.db.backends.utils import split_tzname_delta
-from django.db.models import Exists, ExpressionWrapper, Lookup
 from django.db.models.constants import OnConflict
 from django.utils import timezone
 from django.utils.encoding import force_str
@@ -393,19 +392,6 @@ class DatabaseOperations(BaseDatabaseOperations):
                 lookup = "JSON_UNQUOTE(%s)"
         return lookup
 
-    def conditional_expression_supported_in_where_clause(self, expression):
-        # MySQL ignores indexes with boolean fields unless they're compared
-        # directly to a boolean value.
-        if isinstance(expression, (Exists, Lookup)):
-            return True
-        if isinstance(expression, ExpressionWrapper) and expression.conditional:
-            return self.conditional_expression_supported_in_where_clause(
-                expression.expression
-            )
-        if getattr(expression, "conditional", False):
-            return False
-        return super().conditional_expression_supported_in_where_clause(expression)
-
     def on_conflict_suffix_sql(self, fields, on_conflict, update_fields, unique_fields):
         if on_conflict == OnConflict.UPDATE:
             conflict_suffix_sql = "ON DUPLICATE KEY UPDATE %(fields)s"