Namespace cleaning

Author: Sébastien Geiser

CodingSeb.ExpressionEvaluator/ExpressionEvaluator.cs

@@ -15,7 +15,6 @@
 using System.Globalization;
 using System.Linq;
 using System.Reflection;
-using System.Reflection.Emit;
 using System.Runtime.InteropServices;
 using System.Text;
 using System.Text.RegularExpressions;