diff --git a/Octokit.Tests/Helpers/AssertEx.cs b/Octokit.Tests/Helpers/AssertEx.cs
index 93ad3674..b9c1041b 100644
--- a/Octokit.Tests/Helpers/AssertEx.cs
+++ b/Octokit.Tests/Helpers/AssertEx.cs
@@ -23,23 +23,6 @@ namespace Octokit.Tests.Helpers
             return attribute;
         }
 
-        [Obsolete("This was written before the support for testing asynchronous tasks was added in xUnit 2.0 (because we pre-dated it). Use Assert.ThrowsAsync")]
-        public async static Task<T> Throws<T>(Func<Task> testCode) where T : Exception
-        {
-            try
-            {
-                await testCode();
-                Assert.Throws<T>(() => { }); // Use xUnit's default behavior.
-            }
-            catch (T exception)
-            {
-                return exception;
-            }
-            // We should never reach this line. It's here because the compiler doesn't know that 
-            // Assert.Throws above will always throw.
-            return null;
-        }
-
         static readonly string[] whitespaceArguments = { " ", "\t", "\n", "\n\r", "  " };
 
         public static async Task ThrowsWhenGivenWhitespaceArgument(Func<string, Task> action)