$this->cache->delete('*'); does not work in admin\controller\tool\backup.php

[sabeti05]

What version of OpenCart are you reporting this for?
3.0.3.7

Describe the bug
This line of code appears to have been written to clear cache files after the import operation, but it does not work in practice and does not delete cache files.

To Reproduce

1. check the storage / cache folder there should be some files there, Like: cache.currency.1624262004 cache.store.1624263666

2. In the admin panel / system / maintenance / Backup & Restore / restore tab, Upload an SQL file.

3. check the storage / cache folder, All the cache files are still there.

Expected behavior
Cache files should be removed.

[Opencart-Webkul]

#10248 PR merged.