cleaned up usings.

Author: hargata

Controllers/APIController.cs

@@ -5,8 +5,6 @@
 using CarCareTracker.Models;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
-using System.Collections.Generic;
-using System.Reflection.Metadata;
 using System.Security.Claims;
 
 namespace CarCareTracker.Controllers