[fix] Don't preset HOSTNAME var, interferes with automation

setup/so-functions

@@ -501,9 +501,6 @@ collect_homenet_snsr() {
 }
 
 collect_hostname() {
-	HOSTNAME=$(cat /etc/hostname)
-	if [[ "$HOSTNAME" == *'localhost'* ]]; then HOSTNAME=securityonion; fi
-
 	whiptail_set_hostname
 
 	while ! valid_hostname "$HOSTNAME"; do