sw: Kill unused SwRewriter

Change-Id: Ic4b208773df1cce4e6d682c0d7b119409daf467e
Reviewed-on: https://gerrit.libreoffice.org/31650Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Takeshi Abe <tabe@fixedpoint.jp>

sw/source/uibase/dochdl/swdtflvr.cxx

@@ -3233,8 +3233,6 @@ bool SwTransferable::PrivatePaste( SwWrtShell& rShell )
 
     const int nSelection = rShell.GetSelectionType();
 
-    SwRewriter aRewriter;
-
     SwTrnsfrActionAndUndo aAction( &rShell, UNDO_PASTE_CLIPBOARD);
 
     bool bKillPaMs = false;