diff --git a/src/Microsoft.AspNet.Identity.Authentication/IdentityExtensions.cs b/src/Microsoft.AspNet.Identity.Authentication/IdentityExtensions.cs
deleted file mode 100644
index e99637493d..0000000000
--- a/src/Microsoft.AspNet.Identity.Authentication/IdentityExtensions.cs
+++ /dev/null
@@ -1,59 +0,0 @@
-// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
-
-using System.Security.Claims;
-
-namespace System.Security.Principal
-{
-    /// <summary>
-    ///     Extensions making it easier to get the user name/user id claims off of an identity
-    /// </summary>
-    public static class IdentityExtensions
-    {
-        /// <summary>
-        ///     Return the user name using the UserNameClaimType
-        /// </summary>
-        /// <param name="identity"></param>
-        /// <returns></returns>
-        public static string GetUserName(this IIdentity identity)
-        {
-            if (identity == null)
-            {
-                throw new ArgumentNullException("identity");
-            }
-            var ci = identity as ClaimsIdentity;
-            return ci != null ? ci.FindFirstValue(ClaimsIdentity.DefaultNameClaimType) : null;
-        }
-
-        /// <summary>
-        ///     Return the user id using the UserIdClaimType
-        /// </summary>
-        /// <param name="identity"></param>
-        /// <returns></returns>
-        public static string GetUserId(this IIdentity identity)
-        {
-            if (identity == null)
-            {
-                throw new ArgumentNullException("identity");
-            }
-            var ci = identity as ClaimsIdentity;
-            return ci != null ? ci.FindFirstValue(ClaimTypes.NameIdentifier) : null;
-        }
-
-        /// <summary>
-        ///     Return the claim value for the first claim with the specified type if it exists, null otherwise
-        /// </summary>
-        /// <param name="identity"></param>
-        /// <param name="claimType"></param>
-        /// <returns></returns>
-        public static string FindFirstValue(this ClaimsIdentity identity, string claimType)
-        {
-            if (identity == null)
-            {
-                throw new ArgumentNullException("identity");
-            }
-            var claim = identity.FindFirst(claimType);
-            return claim != null ? claim.Value : null;
-        }
-    }
-}
\ No newline at end of file
diff --git a/test/Microsoft.AspNet.Identity.Authentication.Test/IdentityExtensionsTest.cs b/test/Microsoft.AspNet.Identity.Authentication.Test/IdentityExtensionsTest.cs
deleted file mode 100644
index 0b42b7f813..0000000000
--- a/test/Microsoft.AspNet.Identity.Authentication.Test/IdentityExtensionsTest.cs
+++ /dev/null
@@ -1,77 +0,0 @@
-// Copyright (c) Microsoft Open Technologies, Inc. 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.Security.Claims;
-using System.Security.Principal;
-using Xunit;
-
-namespace Microsoft.AspNet.Identity.Authentication.Test
-{
-    public class IdentityExtensionsTest
-    {
-        public const string ExternalAuthenticationType = "TestExternalAuth";
-
-        [Fact]
-        public void IdentityNullCheckTest()
-        {
-            IIdentity identity = null;
-            Assert.Throws<ArgumentNullException>("identity", () => identity.GetUserId());
-            Assert.Throws<ArgumentNullException>("identity", () => identity.GetUserName());
-            ClaimsIdentity claimsIdentity = null;
-            Assert.Throws<ArgumentNullException>("identity", () => claimsIdentity.FindFirstValue(null));
-        }
-
-        [Fact]
-        public void IdentityNullIfNotClaimsIdentityTest()
-        {
-            IIdentity identity = new TestIdentity();
-            Assert.Null(identity.GetUserId());
-            Assert.Null(identity.GetUserName());
-        }
-
-        [Fact]
-        public void UserNameAndIdTest()
-        {
-            var id = CreateTestExternalIdentity();
-            Assert.Equal("NameIdentifier", id.GetUserId());
-            Assert.Equal("Name", id.GetUserName());
-        }
-
-        [Fact]
-        public void IdentityExtensionsFindFirstValueNullIfUnknownTest()
-        {
-            var id = CreateTestExternalIdentity();
-            Assert.Null(id.FindFirstValue("bogus"));
-        }
-
-        private static ClaimsIdentity CreateTestExternalIdentity()
-        {
-            return new ClaimsIdentity(
-                new[]
-                {
-                    new Claim(ClaimTypes.NameIdentifier, "NameIdentifier", null, ExternalAuthenticationType),
-                    new Claim(ClaimTypes.Name, "Name")
-                },
-                ExternalAuthenticationType);
-        }
-
-        private class TestIdentity : IIdentity
-        {
-            public string AuthenticationType
-            {
-                get { throw new NotImplementedException(); }
-            }
-
-            public bool IsAuthenticated
-            {
-                get { throw new NotImplementedException(); }
-            }
-
-            public string Name
-            {
-                get { throw new NotImplementedException(); }
-            }
-        }
-    }
-}
\ No newline at end of file