diff --git a/backend/src/db/migrations/20250630170849_add-index-for-access-token.ts b/backend/src/db/migrations/20250630170849_add-index-for-access-token.ts
deleted file mode 100644
index b2ad9f3b5..000000000
--- a/backend/src/db/migrations/20250630170849_add-index-for-access-token.ts
+++ /dev/null
@@ -1,29 +0,0 @@
-import { Knex } from "knex";
-
-import { TableName } from "../schemas";
-
-export async function up(knex: Knex): Promise<void> {
-  await knex.raw(`
-        CREATE INDEX CONCURRENTLY IF NOT EXISTS ${TableName.IdentityAccessToken}_identityid_index 
-        ON ${TableName.IdentityAccessToken} ("identityId")
-      `);
-
-  await knex.raw(`
-        CREATE INDEX CONCURRENTLY IF NOT EXISTS ${TableName.IdentityAccessToken}_identityuaclientsecretid_index 
-        ON ${TableName.IdentityAccessToken} ("identityUAClientSecretId")
-      `);
-}
-
-export async function down(knex: Knex): Promise<void> {
-  await knex.raw(`
-        DROP INDEX IF EXISTS ${TableName.IdentityAccessToken}_identityid_index
-      `);
-
-  await knex.raw(`
-        DROP INDEX IF EXISTS ${TableName.IdentityAccessToken}_identityuaclientsecretid_index
-      `);
-}
-
-const config = { transaction: false };
-
-export { config };