fdo#85876: Revert "fdo#74981: cutting nothing should do nothing, ...

... should fix field dupes"

This reverts commit f384598d.

The attributes have to be copied in case splitting a paragraph creates
an empty paragraph.

Change-Id: Icd5730dd9ab8a68f737492645988a4d2f07af7a0

sw/source/core/txtnode/ndtxt.cxx

@@ -2014,8 +2014,6 @@ OUString SwTxtNode::InsertText( const OUString & rStr, const SwIndex & rIdx,
 void SwTxtNode::CutText( SwTxtNode * const pDest,
             const SwIndex & rStart, const sal_Int32 nLen )
 {
-    if(nLen == 0)
-        return;
     if(pDest)
     {
         SwIndex aDestStt(pDest, pDest->GetTxt().getLength());