-Werror,-Wunused-private-field

Change-Id: I5f450365498304d8118dce88af3becc5a8c9ddeb

basctl/source/basicide/layout.cxx

@@ -164,7 +164,6 @@ Layout::SplittedSide::SplittedSide (Layout* pParent, Side eSide) :
     bVertical(eSide == Left || eSide == Right),
     bLower(eSide == Left || eSide == Top),
     nSize(0),
-    nLastPos(0),
     aSplitter(pParent, bVertical ? WB_HSCROLL : WB_VSCROLL)
 {
     InitSplitter(aSplitter);

basctl/source/basicide/layout.hxx

@@ -99,8 +99,6 @@ private:
         Rectangle aRect;
         // size (width or height)
         long nSize;
-        // last position (between Add()s)
-        long nLastPos;
         // the main splitting line
         Splitter aSplitter;
         // the dockable windows (and some data)