1 files changed, 0 insertions, 22 deletions
diff --git a/src/DotNetOpenAuth.Core/PureAttribute.cs b/src/DotNetOpenAuth.Core/PureAttribute.cs
deleted file mode 100644
index 04f7ead..0000000
--- a/src/DotNetOpenAuth.Core/PureAttribute.cs
+++ /dev/null
@@ -1,22 +0,0 @@
-//-----------------------------------------------------------------------
-// <copyright file="PureAttribute.cs" company="Andrew Arnott">
-//     Copyright (c) Andrew Arnott. All rights reserved.
-// </copyright>
-//-----------------------------------------------------------------------
-
-namespace System.Diagnostics.Contracts {
-	using System;
-	using System.Collections.Generic;
-	using System.Linq;
-	using System.Text;
-
-#if !CLR4
-	/// <summary>
-	/// Designates a type or member as one that does not mutate any objects that were allocated
-	/// before the invocation of the member.
-	/// </summary>
-	[AttributeUsage(AttributeTargets.All, Inherited = false, AllowMultiple = false)]
-	internal sealed class PureAttribute : Attribute {
-	}
-#endif
-}