Deleted unused code from the C# generator.

Signed-off-by: Dimitar Dobrev <dpldobrev@protonmail.com>

src/Generator/Generators/CSharp/CSharpSources.cs

@@ -588,14 +588,6 @@ namespace CppSharp.Generators.CSharp
 
         private void GenerateClassInternalsField(LayoutField field, Class @class)
         {
-            Declaration decl;
-            field.QualifiedType.Type.TryGetDeclaration(out decl);
-
-            var arrayType = field.QualifiedType.Type.Desugar() as ArrayType;
-            var coreType = field.QualifiedType.Type.Desugar();
-            if (arrayType != null && arrayType.SizeType == ArrayType.ArraySize.Constant)
-                coreType = arrayType.Type.Desugar();
-
             TypePrinterResult retType = TypePrinter.VisitFieldDecl(
                 new Field { Name = field.Name, QualifiedType = field.QualifiedType });