I Can't find this line of text anywhere and would like to remove it

[Giest90]

Just installed T-UI Expert and there's a line i cant find in any of the config files that reads:

use config -set custom_command [command] for example: curl -s http://wttr.in/dortmund\?0Y&lang=de 

im not running a random curl, its tacked onto the end of my weather infornation but does not appear to be a part of it. Anyone know where I can find and remove that line? It shows error in red from time to time and doesn't seem to be anywhere in the XML files, I'm trying to find it in the source code but I'm not exactly sure what I'm looking for to comment it out.

edit: removed screenshot full of personally identifiable information.