Remove two unused options.

src/Generator/Driver.cs

@@ -210,8 +210,6 @@ namespace CppSharp
         public bool GenerateLibraryNamespace;
         public bool GenerateFunctionTemplates;
         public bool GeneratePartialClasses;
-        public string Template;
-        public string Assembly;
         public string IncludePrefix;
         public bool WriteOnlyWhenChanged;
         public Func<TranslationUnit, string> GenerateName;