Revert "add: コメントを追加"

This reverts commit 7ee301c3ee.

packages/backend/migration/1698931321665-add-comment.js

@@ -1,16 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and other misskey contributors
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-export class AddComment1698931321665 {
-    name = 'AddComment1698931321665'
-
-    async up(queryRunner) {
-        await queryRunner.query(`COMMENT ON COLUMN "meta"."emailVerificationExpiresIn" IS 'The expiration time of email verification (unit: minute)'`);
-    }
-
-    async down(queryRunner) {
-        await queryRunner.query(`COMMENT ON COLUMN "meta"."emailVerificationExpiresIn" IS NULL`);
-    }
-}