Remove python access to QtiPlot's 'Note'. Re #4335.

Code/Mantid/MantidPlot/src/qti.sip

@@ -675,30 +675,6 @@ private:
   MultiLayer(const MultiLayer&);
 };
 
-class Note: MdiSubWindow
-{
-%TypeHeaderCode
-#include "src/Note.h"
-%End
-public:
-  void execute() const;
-  void executeAll();
-  void evaluate();
-
-  bool autoexec() const;
-  void setAutoexec(bool = true);
-
-  QString text();
-  void setText(const QString &s);
-
-  void exportPDF(const QString& fileName);
-  QString exportASCII(const QString &file=QString::null);
-  QString importASCII(const QString &file=QString::null);
-
-private:
-  Note(const Note&);
-};
-
 class Graph3D: MdiSubWindow
 {
 %TypeHeaderCode
@@ -827,12 +803,6 @@ public:
   MultiLayer* newGraph();
   MultiLayer* multilayerPlot(const QString&, int, int, int)/PyName=newGraph/;
 
-  Note *note(const QString&);
-%MethodCode
-  sipRes = sipCpp->current_folder->note(*a0, false);
-  if(!sipRes)
-    sipRes = sipCpp->projectFolder()->note(*a0, true);
-%End
   MultiLayer *multilayerPlot(Table*, SIP_PYTUPLE, int=1) /PyName=plot/;
 %MethodCode
   QStringList l;