Remove unused imports (#2124)

src/Runner.Common/ActionCommand.cs

@@ -1,4 +1,3 @@
-using GitHub.Runner.Common.Util;
 using GitHub.Runner.Sdk;
 using System;
 using System.Collections.Generic;

src/Runner.Common/ActionResult.cs

@@ -1,5 +1,3 @@
-using System;
-
 namespace GitHub.Runner.Common
 {
     public enum ActionResult

src/Runner.Common/CommandLineParser.cs

@@ -1,4 +1,3 @@
-using GitHub.Runner.Common.Util;
 using System;
 using System.Collections.Generic;
 using GitHub.DistributedTask.Logging;

src/Runner.Common/ConfigurationStore.cs

@@ -1,4 +1,3 @@
-using GitHub.Runner.Common.Util;
 using GitHub.Runner.Sdk;
 using System;
 using System.IO;

src/Runner.Common/ExtensionManager.cs

@@ -1,4 +1,3 @@
-using GitHub.Runner.Common.Util;
 using GitHub.Runner.Sdk;
 using System;
 using System.Collections.Concurrent;

src/Runner.Common/HostTraceListener.cs

@@ -1,4 +1,3 @@
-using GitHub.Runner.Common.Util;
 using GitHub.Runner.Sdk;
 using System;
 using System.Diagnostics;

src/Runner.Common/JobNotification.cs

@@ -1,10 +1,7 @@
-using System;
-using System.IO;
-using System.IO.Pipes;
+using System;
 using System.Net;
 using System.Net.Sockets;
 using System.Text;
-using System.Threading;
 using System.Threading.Tasks;
 
 namespace GitHub.Runner.Common

src/Runner.Common/JobServer.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -13,7 +13,6 @@ using GitHub.Runner.Sdk;
 using GitHub.Services.Common;
 using GitHub.Services.WebApi;
 using GitHub.Services.WebApi.Utilities.Internal;
-using Newtonsoft.Json;
 
 namespace GitHub.Runner.Common
 {