fix: lint

Author: Justintime50

EasyPost/Parameters/CarrierAccount/CreateOauth.cs

@@ -1,6 +1,5 @@
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
-using EasyPost.Models.API;
 using EasyPost.Utilities.Internal.Attributes;
 using EasyPost.Utilities.Internal.Extensions;