Cleanup of unnecessary items in user scripts config. JSON

Fixes #5456

scripts/lua/modules/callback_definitions/flow/country_check.lua

@@ -4,7 +4,6 @@
 
 local user_scripts = require("user_scripts")
 local alerts_api = require "alerts_api"
-local alert_severities = require "alert_severities"
 local alert_consts = require("alert_consts")
 local flow_alert_keys = require "flow_alert_keys"
 
@@ -20,7 +19,6 @@ local script = {
 
   -- The default configuration of this script
   default_value = {
-    severity = alert_severities.error,
     items = {},
   },