[TD] DrawView*: remove unused includes - part 2

- also sort includes
- also additions to precompiled header

src/Mod/TechDraw/App/DrawViewSymbol.h

@@ -23,19 +23,16 @@
 #ifndef DrawViewSymbol_h_
 #define DrawViewSymbol_h_
 
-#include <Mod/TechDraw/TechDrawGlobal.h>
-
-#include <Mod/TechDraw/TechDrawGlobal.h>
-
 #include <QDomDocument>
-#include <QXmlResultItems>
 
 #include <App/DocumentObject.h>
 #include <App/FeaturePython.h>
 #include <Base/BoundBox.h>
+#include <Mod/TechDraw/TechDrawGlobal.h>
 
 #include "DrawView.h"
 
+
 namespace TechDraw
 {
 class DrawPage;