I want to remove the Subject Prefix when using Mailing List

How to remove the Subject Prefix when using Mailing List?

Hello everyone,

My **domain name** is : enitje.com

And I use **the offer** : Hosting Pro

I have the following problem / I would like to set up :

I want to remove the Subject Prefix when using Mailing List because when I send a mail through a mailing list it shows the mailing list's name like this : "[List Name] The subject I wrote"
For example I sent a mail to a mailing list "quartet@enitje.com" with this subject : [Testing - ENIT Junior Entreprise]
However, the subscribers received the subject like this: [quartet] [Testing - ENIT Junior Entreprise]