KRelay compiling

I need to get rid of the 'welcome to krelay' line that pops up whenever you go in a dungeon. someone told me all i had to do was recompile krelay from its github page and take out the line that makes it do that.. I know a little about that stuff but not much, how would i go about doing all that?

also would i have to do that every time there's an update, or can i just change the line in some part of krelay, download the updated krelays as they come out, and replace that part from the updated krelays with whatever i edited originally each time?

Removing method at Line 44 in ReconnectHandler class should suffice. As for your second question, you would need to recompile with new packets and objects every time they are updated (usually every game update), but this would not require you to touch the source again.