Kill saveAsWithOptions again. (merge error/oversight)

The declaration sneaked in again when merging the libreofficekit
tiled rendering changes, there's no actual implementation or use
of this anywhere though.

include/LibreOfficeKit/LibreOfficeKit.h

@@ -72,10 +72,6 @@ struct _LibreOfficeKitDocumentClass
                      const char *pUrl,
                      const char *pFormat,
                      const char *pFilterOptions);
-  int (*saveAsWithOptions) (LibreOfficeKitDocument* pThis,
-                            const char *pUrl,
-                            const char *pFormat,
-                            const char *pFilterOptions);
 #ifdef LOK_USE_UNSTABLE_API
   LibreOfficeKitDocumentType (*getDocumentType) (LibreOfficeKitDocument* pThis);