Don't suggest unneeded cdrdao and dvd+rw-tools anymore.

The makecd handler checks if those tools are installed, sure, but it actually
does not use these. Since its development has been stalled for years, we can
safely ignore the possibility of this handler starting to use such tools in the
near future.

debian/control

@@ -20,9 +20,7 @@ Depends:
  bsd-mailx | mailx | mailutils,
  ${misc:Depends}
 Suggests:
- cdrdao,
  debconf-utils,
- dvd+rw-tools,
  genisoimage,
  hwinfo,
  mdadm,