[Update] Remove obsolete parameters

[Compose] New watchdog image
[Watchdog] Allow multiple rcpts separated by comma

update.sh

@@ -114,7 +114,6 @@ CONFIG_ARRAY=(
   "LOG_LINES"
   "SNAT_TO_SOURCE"
   "SNAT6_TO_SOURCE"
-  "SYSCTL_IPV6_DISABLED"
   "COMPOSE_PROJECT_NAME"
   "SQL_PORT"
   "API_KEY"
@@ -129,15 +128,6 @@ for option in ${CONFIG_ARRAY[@]}; do
       echo "Adding new option \"${option}\" to mailcow.conf"
       echo "${option}=" >> mailcow.conf
     fi
-  elif [[ ${option} == "SYSCTL_IPV6_DISABLED" ]]; then
-    if ! grep -q ${option} mailcow.conf; then
-      echo "Adding new option \"${option}\" to mailcow.conf"
-      echo "# Disable IPv6" >> mailcow.conf
-      echo "# mailcow-network will still be created as IPv6 enabled, all containers will be created" >> mailcow.conf
-      echo "# without IPv6 support." >> mailcow.conf
-      echo "# Use 1 for disabled, 0 for enabled" >> mailcow.conf
-      echo "SYSCTL_IPV6_DISABLED=0" >> mailcow.conf
-    fi
   elif [[ ${option} == "COMPOSE_PROJECT_NAME" ]]; then
     if ! grep -q ${option} mailcow.conf; then
       echo "Adding new option \"${option}\" to mailcow.conf"