svx: cleanup some forward decls, unneeded pragma once, whitespace

Change-Id: I26cd723e0ffe907a7aa8cb4f73ba6bfbd6db5fbc
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/119719
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

include/svx/svdograf.hxx

@@ -29,17 +29,8 @@
 #include <o3tl/typed_flags_set.hxx>
 #include <memory>
 
-namespace sdr
-{
-    namespace properties
-    {
-        class GraphicProperties;
-    } // end of namespace properties
-    namespace contact
-    {
-        class ViewObjectContactOfGraphic;
-    } // end of namespace contact
-} // end of namespace sdr
+namespace sdr::properties { class GraphicProperties; }
+namespace sdr::contact { class ViewObjectContactOfGraphic; }
 
 /**
  * Options for GetTransformedGraphic()

include/svx/svdpage.hxx

@@ -64,7 +64,7 @@ private:
     SdrObjList(const SdrObjList& rSrcList) = delete;
     SdrObjList &operator=(const SdrObjList& rSrcList) = delete;
 
-    ::std::vector<SdrObject*>   maList;
+    std::vector<SdrObject*> maList;
 
     tools::Rectangle    maSdrObjListOutRect;
     tools::Rectangle    maSdrObjListSnapRect;

include/svx/svdpagv.hxx

@@ -42,20 +42,16 @@ class SdrView;
 class SdrPageObj;
 class SdrPageView;
 
-namespace sdr
+namespace sdr::contact
 {
-    namespace contact
-    {
-        class ViewObjectContactRedirector;
-        class DisplayInfo;
-        class ViewObjectContactRedirector;
-    } // end of namespace contact
-} // end of namespace sdr
+    class ViewObjectContactRedirector;
+    class DisplayInfo;
+    class ViewObjectContactRedirector;
+}
 
 // typedefs for a list of SdrPageWindow
 class SdrPageWindow;
 
-
 class SVXCORE_DLLPUBLIC SdrPageView
 {
 private:
@@ -255,6 +251,4 @@ public:
     const Color& GetApplicationDocumentColor() const { return maDocumentColor;}
 };
 
-#pragma once
-
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */