Apply suggestions from code review

Co-authored-by: Steve Sanderson <[email protected]>

Author: captainsafia

src/Components/Components/src/Routing/OnNavigateArgs.cs

@@ -1,3 +1,6 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -15,8 +18,8 @@ public OnNavigateArgs(string path, CancellationTokenSource cancellationTokenSour
             CancellationTokenSource = cancellationTokenSource;
         }
 
-        public string Path { get; private set; }
+        public string Path { get; }
 
-        public CancellationTokenSource CancellationTokenSource { get; private set; }
+        public CancellationTokenSource CancellationTokenSource { get; }
     }
 }

src/Components/Components/src/Routing/Router.cs

@@ -8,8 +8,6 @@
 using System.Collections.ObjectModel;
 using System.Linq;
 using System.Reflection;
-using System.Reflection.Metadata.Ecma335;
-using System.Security.Cryptography;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Components.Rendering;