Cleanup unused usings

src/Config.Tests/CommandLineTests.cs

@@ -3,7 +3,6 @@
 using System.CommandLine;
 using System.CommandLine.Builder;
 using System.CommandLine.Invocation;
-using System.CommandLine.IO;
 using System.CommandLine.Parsing;
 using System.IO;
 using System.Linq;

src/Config.Tests/ConfigReaderTests.cs

@@ -2,10 +2,8 @@
 using System.Globalization;
 using System.IO;
 using System.Linq;
-using System.Threading;
 using System.Threading.Tasks;
 using Xunit;
-using Xunit.Abstractions;
 
 namespace DotNetConfig
 {

src/Config.Tests/ConfigurationTests.cs

@@ -1,7 +1,5 @@
-using System;
-using System.Globalization;
+using System.Globalization;
 using System.IO;
-using System.Reflection;
 using System.Runtime.CompilerServices;
 using Microsoft.Extensions.Configuration;
 using Xunit;

src/Config.Tests/TextRulesTests.cs

@@ -1,5 +1,4 @@
-using System;
-using Xunit;
+using Xunit;
 
 namespace DotNetConfig
 {

src/Config/ConfigEntry.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Diagnostics;
 using System.Globalization;
-using System.Text;
 
 namespace DotNetConfig
 {