Remove unused using directives from HelperExtensions.cs and EFCoreDependencyInjection.cs

Author: ZeidLab

src/EFCore/EFCoreDependencyInjection.cs

@@ -1,6 +1,5 @@
 using System.Diagnostics.CodeAnalysis;
 
-using Microsoft.AspNetCore.Builder;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;

src/EFCore/Extensions/HelperExtensions.cs

@@ -1,5 +1,4 @@
 using System.Diagnostics.Contracts;
-using System.Globalization;
 using System.Linq.Expressions;
 using System.Runtime.CompilerServices;