Remove unnecessary using.

Author: kolan72

src/ExpressValidator.Extensions.DependencyInjection/ProxyValidator.cs

@@ -1,15 +1,12 @@
 using FluentValidation.Results;
 using Microsoft.Extensions.DependencyInjection;
 using System;
-using System.Collections.Generic;
-using System.Data;
-using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 
 namespace ExpressValidator.Extensions.DependencyInjection
 {
-    internal class ProxyValidator<T> : IExpressValidator<T>
+	internal class ProxyValidator<T> : IExpressValidator<T>
     {
 		private readonly IExpressValidator<T> _innerValidator;
 		public ProxyValidator(IServiceProvider serviceProvider)