Merge pull request #402 from Ketteiteki/remove_unused_classes_and_move_registration_services

remove interface IMailgunSettings

Author: kolosovpetro

MangoAPI.Application/Interfaces/IMailgunSettings.cs

@@ -4,7 +4,7 @@
 namespace MangoAPI.Application.Services;
 
 [Obsolete("Mailgun service is not used. We plan to use Microsoft graph API in future to send emails.")]
-public class MailgunSettings : IMailgunSettings
+public class MailgunSettings
 {
     public string MailgunApiBaseUrl { get; }