feature(#6): this commit removes unnecessary global usage directive

Author: https-richardy

Source/HttpsRichardy.Federation.Application/Usings.cs

@@ -30,7 +30,6 @@
 global using HttpsRichardy.Federation.Application.Providers;
 global using HttpsRichardy.Federation.Application.Mappers;
 global using HttpsRichardy.Federation.Application.Utilities;
-global using HttpsRichardy.Federation.Application.Handlers.Authorization;
 
 global using FluentValidation;
 global using HttpsRichardy.Dispatcher.Contracts;