I know this is an old post, but someone might come across it like I did when having the same behaviour on a cPanel hosting server. In my case, I had forgotten that my domain was going through Cloudflare and they were caching my content to speed up performance. When you are entering a url for a resource that you are sure you have deleted and it still comes up, there's caching going on somehwere. That can be at the user (browser) level, hosting server level, or even at the domain level as it is if you use Cloudflare or something similar.