Remove double negative
Remove double negative

This does not change the returned datatype..

Fixes #2591
Spuds/Elkarte,emanuele45/Dialogo,elkarte/Elkarte,Spuds/Elkarte,interlab/Elkarte,emanuele45/Dialogo,nwsw/Elkarte,StealthWombat/How-to-fork-an-Elk,elkarte/Elkarte,StealthWombat/How-to-fork-an-Elk,interlab/Elkarte,StealthWombat/How-to-fork-an-Elk,elkarte/Elkarte,nwsw/Elkarte,Spuds/Elkarte,interlab/Elkarte,StealthWombat/How-to-fork-an-Elk,nwsw/Elkarte,emanuele45/Dialogo