Remove unused local variable 'aResultNode'

Change-Id: I8a240176fb3a446a8f17efd258ef5136cc44c139
Reviewed-on: https://gerrit.libreoffice.org/57980
Tested-by: Jenkins
Reviewed-by: Muhammet Kara <muhammet.kara@pardus.org.tr>

connectivity/source/drivers/dbase/dindexnode.cxx

@@ -481,7 +481,6 @@ void ONDXPage::Merge(sal_uInt16 nParentNodePos, const ONDXPagePtr& xPage)
     DBG_ASSERT(nParentNodePos != NODE_NOTFOUND, "Wrong index setup");
 
     /*  Merge 2 pages   */
-    ONDXNode aResultNode;
     sal_uInt16 nMaxNodes = rIndex.GetMaxNodes(),
            nMaxNodes_2 = nMaxNodes / 2;