winaccessibility: CHILDID_SELF already defined by some windows header

... so no need to define it ourselves, much less 3 times.

Change-Id: I92c05849452fa2516ec09bc5789617df3b743f8d

winaccessibility/inc/accHelper.hxx

@@ -28,7 +28,6 @@ enum DIRECTION
     AFTER_CHILD=2
 };
 
-#define CHILDID_SELF             0
 #define UNO_MSAA_UNMAPPING       0x00000000
 
 

winaccessibility/source/UAccCOM/MAccessible.h

@@ -35,7 +35,6 @@
 #include <rtl/ustring.hxx>
 #endif
 
-#define     CHILDID_SELF        0
 #define     OBJID_WINDOW        ((LONG)0x00000000)
 #define     OBJID_SYSMENU       ((LONG)0xFFFFFFFF)
 #define     OBJID_TITLEBAR      ((LONG)0xFFFFFFFE)

winaccessibility/source/service/AccObjectWinManager.cxx

@@ -46,8 +46,6 @@
 #include "unomsaaevent.hxx"
 #include "checkmt.hxx"
 
-#define CHILDID_SELF             0
-
 
 using namespace std;
 using namespace com::sun::star::accessibility;