drop now unused WB_REFMODE bit

Change-Id: I873063a8cf52652ca8d3c871170beeb4585de8f1

include/tools/wintypes.hxx

@@ -171,7 +171,6 @@ WinBits const WB_DOCKABLE =             SAL_CONST_INT64(0x20000000);
 WinBits const WB_AUTOVSCROLL =          SAL_CONST_INT64(0x40000000);
 WinBits const WB_HYPHENATION =          SAL_CONST_INT64(0x800000000) | WB_WORDBREAK;
 WinBits const WB_CHILDDLGCTRL =         SAL_CONST_INT64(0x100000000000);
-WinBits const WB_REFMODE =              SAL_CONST_INT64(0x200000000000);
 
 // system floating window
 WinBits const WB_SYSTEMFLOATWIN =       SAL_CONST_INT64(0x100000000);

vcl/source/window/window.cxx

@@ -3623,9 +3623,6 @@ bool Window::IsInModalMode() const
 
 bool Window::IsInModalNonRefMode() const
 {
-    if(mpWindowImpl->mnStyle & WB_REFMODE)
-        return false;
-
     return IsInModalMode();
 }