Player stuff doesn't drop

Hi everyone,
I have a problem on my server: the stuff doesn't drop when player get killed. Maybe one of my plugin? But someone have a code to fix that? Or maybe how to make plugin who works on only one world of the server?
Thanks for helping and I apologize for my bad English..

Do you have 1vs1 plugin installed?

Yes, of course

its not a bug, the plugin was developed like that

You can't blame @Minifixio's code. It's your problem that you installed. As @zombie_Power said, it was DESIGNED to be like that.

I don't blame but I asked something, maybe poorly written, but nobody helps me. Perhaps it's too easy to trump on what says the latest men.
So new question: how can I remove this?

[QUOTE="KingDeadKnight, post: 126312, member: 36183"... maybe poorly written...[/QUOTE]
You're already blaming him for his code. And to remove the plugin, simply delete the phar file and start the server. It's gone.

Edit code where

PHP:

$event->setDrops([]);


should be

PHP:

The "maybe poorly written" is to qualify my question.. But ok, you take this for a blaming.. Ok.