cleaned up mxomnicreateparambase

I remember there being a reason why I included MxOmniCreateParambase in ISLE, but testing now it doesn't seem to be what I thought (or maybe other factors are influencing it now). Indeed it seems this is unnecessary now.

LEGO1/mxomnicreateparambase.h

@@ -5,8 +5,7 @@
 class MxOmniCreateParamBase
 {
 public:
-  ~MxOmniCreateParamBase();
-  virtual void vtable00(){}
+  virtual ~MxOmniCreateParamBase(){}
 
 };