remove database(no need mongodb anymore)

FreeSR.Dispatch/DispatchServerConfiguration.cs

@@ -1,13 +1,11 @@
 namespace FreeSR.Dispatch
 {
-    using FreeSR.Database.Configuration;
     using FreeSR.Dispatch.Configuration;
     using FreeSR.Shared.Configuration;
 
     internal class DispatchServerConfiguration
     {
         public NetworkConfiguration Network { get; set; }
-        public DatabaseConfiguration Database { get; set; }
         public RegionConfiguration Region { get; set; }
     }
 }