Fixes validate function

appid var was set to an unset variable for unknown reason

lgsm/functions/command_validate.sh

@@ -9,7 +9,6 @@ local commandaction="Validate"
 local function_selfname="$(basename "$(readlink -f "${BASH_SOURCE[0]}")")"
 
 fn_validation(){
-	appid="${1}"
 	echo ""
 	echo -e "	* Validating may overwrite some customised files."
 	echo -en "	* https://developer.valvesoftware.com/wiki/SteamCMD#Validate"