1 files changed, 0 insertions, 17 deletions
diff --git a/src/mscorlib/src/System/Threading/Tasks/TaskCompletionSource.cs b/src/mscorlib/src/System/Threading/Tasks/TaskCompletionSource.cs
index 320f704f09..bf9f9cbb2c 100644
--- a/src/mscorlib/src/System/Threading/Tasks/TaskCompletionSource.cs
+++ b/src/mscorlib/src/System/Threading/Tasks/TaskCompletionSource.cs
@@ -17,7 +17,6 @@ using System.Diagnostics.Contracts;
 using System.Collections.Generic;
 using System.Runtime.CompilerServices;
 using System.Runtime.ExceptionServices;
-using System.Security.Permissions;
 using System.Threading;
 
 // Disable the "reference to volatile field not treated as volatile" error.
@@ -203,22 +202,6 @@ namespace System.Threading.Tasks
             return rval;
         }
 
-        /// <summary>Attempts to transition the underlying task to the faulted state.</summary>
-        /// <param name="exceptions">The collection of exception dispatch infos to bind to this task.</param>
-        /// <returns>True if the operation was successful; otherwise, false.</returns>
-        /// <remarks>Unlike the public methods, this method doesn't currently validate that its arguments are correct.</remarks>
-        internal bool TrySetException(IEnumerable<ExceptionDispatchInfo> exceptions)
-        {
-            Debug.Assert(exceptions != null);
-#if DEBUG
-            foreach(var edi in exceptions) Debug.Assert(edi != null, "Contents must be non-null");
-#endif
-
-            bool rval = m_task.TrySetException(exceptions);
-            if (!rval && !m_task.IsCompleted) SpinUntilCompleted();
-            return rval;
-        }
-
         /// <summary>
         /// Transitions the underlying
         /// <see cref="T:System.Threading.Tasks.Task{TResult}"/> into the