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

- also sort includes
- also additions to precompiled header

src/Mod/TechDraw/App/DrawWeldSymbol.cpp

@@ -22,24 +22,15 @@
 
 #include "PreCompiled.h"
 
-#ifndef _PreComp_
-#endif
-
-#include <App/Application.h>
 #include <App/Document.h>
 #include <App/DocumentObject.h>
 #include <Base/Console.h>
-#include <Base/Exception.h>
-#include <Base/Parameter.h>
 
-#include "DrawUtil.h"
-
-#include <Mod/TechDraw/App/DrawWeldSymbolPy.h>  // generated from DrawWeldSymbolPy.xml
-
-#include "DrawLeaderLine.h"
-#include "DrawTile.h"
-#include "DrawTileWeld.h"
 #include "DrawWeldSymbol.h"
+#include "DrawWeldSymbolPy.h"  // generated from DrawWeldSymbolPy.xml
+#include "DrawLeaderLine.h"
+#include "DrawTileWeld.h"
+
 
 using namespace TechDraw;