[Import] remove unused includes and Xerces

src/Mod/Import/Gui/AppImportGui.cpp

@@ -21,20 +21,16 @@
  *                                                                         *
  ***************************************************************************/
 
-
 #include "PreCompiled.h"
-#ifndef _PreComp_
-#endif
 
-#include <App/Application.h>
 #include <Base/Console.h>
 #include <Base/Interpreter.h>
 #include <Base/PyObjectBase.h>
-
 #include <Gui/Application.h>
 
 #include "Workbench.h"
 
+
 // use a different name to CreateCommand()
 void CreateImportCommands(void);