refactor: implement s3 storage

store/db/mysql/user_setting.go

@@ -2,7 +2,6 @@ package mysql
 
 import (
 	"context"
-	"database/sql"
 	"strings"
 
 	storepb "github.com/usememos/memos/proto/gen/store"
@@ -55,13 +54,3 @@ func (d *DB) ListUserSettings(ctx context.Context, find *store.FindUserSetting)
 
 	return userSettingList, nil
 }
-
-func vacuumUserSetting(ctx context.Context, tx *sql.Tx) error {
-	stmt := "DELETE FROM `user_setting` WHERE `user_id` NOT IN (SELECT `id` FROM `user`)"
-	_, err := tx.ExecContext(ctx, stmt)
-	if err != nil {
-		return err
-	}
-
-	return nil
-}