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-rw-r--r--src/mscorlib/src/System/Threading/Tasks/ConcurrentExclusiveSchedulerPair.cs1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/mscorlib/src/System/Threading/Tasks/ConcurrentExclusiveSchedulerPair.cs b/src/mscorlib/src/System/Threading/Tasks/ConcurrentExclusiveSchedulerPair.cs
index c7a96b0394..a87406a493 100644
--- a/src/mscorlib/src/System/Threading/Tasks/ConcurrentExclusiveSchedulerPair.cs
+++ b/src/mscorlib/src/System/Threading/Tasks/ConcurrentExclusiveSchedulerPair.cs
@@ -20,7 +20,6 @@ using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System.Diagnostics.Contracts;
using System.Security;
-using System.Security.Permissions;
namespace System.Threading.Tasks
{