Remove and simplify code in the major refactoring

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

src/Generator/Generators/C/CppTypePrinter.cs

@@ -332,10 +332,7 @@ namespace CppSharp.Generators.C
 
         public override TypePrinterResult VisitParameter(Parameter param, bool hasName = true)
         {
-            Parameter oldParam = Parameter;
-            Parameter = param;
             var result = param.Type.Visit(this, param.QualifiedType.Qualifiers);
-            Parameter = oldParam;
 
             string name = param.Name;
             bool printName = hasName && !string.IsNullOrEmpty(name);
@@ -346,11 +343,8 @@ namespace CppSharp.Generators.C
             if (!printName)
                 return result;
 
-            string typeName;
             result.Name = param.Name;
-            typeName = result.ToString();
-
-            return typeName;
+            return result.ToString();
         }
 
         public override TypePrinterResult VisitDelegate(FunctionType function)

src/Generator/Generators/TypePrinter.cs

@@ -12,8 +12,6 @@ namespace CppSharp.Generators
         public StringBuilder NamePrefix { get; set; } = new StringBuilder();
         public StringBuilder NameSuffix { get; set; } = new StringBuilder();
 
-        public bool HasNamePlaceholder => Type.Contains("{0}");
-
         public TypePrinterResult(string type = "", string nameSuffix = "")
         {
             Type = type;
@@ -28,7 +26,8 @@ namespace CppSharp.Generators
 
         public override string ToString()
         {
-            if (HasNamePlaceholder)
+            bool hasPlaceholder = Type.Contains("{0}");
+            if (hasPlaceholder)
                 return string.Format(Type, $"{NamePrefix}{Name}{NameSuffix}");
 
             var namePrefix = (Name.Length > 0) ? $"{NamePrefix} " : NamePrefix.ToString();

src/Generator/Passes/MultipleInheritancePass.cs

@@ -83,11 +83,6 @@ namespace CppSharp.Passes
             if (@base.CompleteDeclaration != null)
                 @base = (Class) @base.CompleteDeclaration;
 
-            // Prevent multiple interfaces from being generated in cases of
-            // a secondary base being inherited multiple times in a chain.
-            if (@base.IsInterface)
-                return @base;
-
             return interfaces.FirstOrDefault(i => i.OriginalClass == @base) ??
                 GetNewInterface("I" + @base.Name, @base);
         }

src/Generator/Passes/ParamTypeToInterfacePass.cs

@@ -31,10 +31,6 @@ namespace CppSharp.Passes
             if (!base.VisitFunctionDecl(function))
                 return false;
 
-            // TODO: Fix this once Dispose methods are generated in a pass.
-            if (function.SynthKind == FunctionSynthKind.InterfaceDispose)
-                return false;
-
             // parameters and returns from a specialised interface
             // must not be replaced if the templated interface uses a template parameter
             var interfaceFunction = GetInterfaceFunction(function);
@@ -101,7 +97,7 @@ namespace CppSharp.Passes
             if (@class == null || !@class.IsInterface)
                 return null;
 
-            return @class.Methods.FirstOrDefault(m => m.OriginalFunction == function.OriginalFunction);
+            return @class.Methods.First(m => m.OriginalFunction == function.OriginalFunction);
         }
 
         private static Property GetTemplateInterfaceProperty(Property property)