please remove nmh-1.8RC2.tar.gz and .sig file from nmh download area

[David Levine]

Please remove these 0-length files:

http://download.savannah.nongnu.org/releases/nmh/nmh-1.8RC2.tar.gz
http://download.savannah.nongnu.org/releases/nmh/nmh-1.8RC2.tar.gz.sig

They were uploaded by mistake.

Thanks,
David