Deleted two unused variables.

src/Generator/BindingContext.cs

@@ -24,8 +24,6 @@ namespace CppSharp.Generators
 
         public Dictionary<Function, DelegatesPass.DelegateDefinition> Delegates { get; private set; }
 
-        private static readonly Dictionary<string, string> libraryMappings = new Dictionary<string, string>();
-
         public BindingContext(IDiagnostics diagnostics, DriverOptions options,
             ParserOptions parserOptions = null)
         {

src/Generator/Generators/CSharp/CSharpSources.cs

@@ -2656,7 +2656,6 @@ namespace CppSharp.Generators.CSharp
                 if (construct == null)
                 {
                     var @class = retClass.OriginalClass ?? retClass;
-                    var specialization = @class as ClassTemplateSpecialization;
                     WriteLine("var {0} = new {1}.{2}{3}();", Helpers.ReturnIdentifier,
                         @class.Visit(TypePrinter), Helpers.InternalStruct,
                         Helpers.GetSuffixForInternal(@class));