sdtd doesn't need steam login anymore

lgsm/config-default/config-lgsm/sdtdserver/_default.cfg

@@ -8,10 +8,6 @@
 
 #### Server Settings ####
 
-## SteamCMD Login | https://github.com/GameServerManagers/LinuxGSM/wiki/SteamCMD#steamcmd-login
-steamuser="username"
-steampass='password'
-
 ## Server Start Settings | https://github.com/GameServerManagers/LinuxGSM/wiki/Start-Parameters
 ip="0.0.0.0"