[PD] remove Python.h from headers

seems not to be necessary anymore

src/Mod/PartDesign/App/AppPartDesign.cpp

@@ -20,11 +20,7 @@
  *                                                                         *
  ***************************************************************************/
 
-
 #include "PreCompiled.h"
-#ifndef _PreComp_
-# include <Python.h>
-#endif
 
 #include <Base/Console.h>
 #include <Base/Interpreter.h>
@@ -61,6 +57,7 @@
 #include "FeatureTransformed.h"
 #include "ShapeBinder.h"
 
+
 namespace PartDesign {
 extern PyObject* initModule();
 }