Hide method overloads and return types in the autocompletion window

[DasOhmoff]

Hey 👋, thank you for your great work.

I am using jdtls with cmp, to display autocompletion entries through it.

When I use this language server to autocomplete, it shows all the overloads of a method and each return type of each method right within the autocompletion results:

How can I hide these things? Because they show up if I select the completion item, and so I don't really need them here.

I would like to have something like this:

Many thanks for your help.