remove EDDB use from tool

This never worked right, and it slowed down the tool massively on start up. And now that automatic objective detection works quite well it is no longer really needed.

Util/AppConfig.cs

@@ -4,19 +4,10 @@ namespace EliteBGS.Util {
     public class AppConfig : INotifyPropertyChanged {
         private static readonly string default_journal_location = "%UserProfile%\\Saved Games\\Frontier Developments\\Elite Dangerous";
         private string journal_location = default_journal_location;
-        private bool useeddb = false;
         private string lastdiscordlog;
 
         public string DefaultJournalLocation => default_journal_location;
 
-        public bool UseEDDB {
-            get => useeddb;
-            set {
-                useeddb = value;
-                FirePropertyChanged("UseEDDB");
-            }
-        }
-
         public string LastUsedDiscordTemplate {
             get => lastdiscordlog;
             set {