Removed mhmail.c because it was no longer needed and could get in the way of make if its timestamp was newer than that of the mhmail script.  Thanks to Johan Viklund for reporting this.
Removed mhmail.c because it was no longer needed and could get in
the way of make if its timestamp was newer than that of the mhmail
script.  Thanks to Johan Viklund for reporting this.

dscho/nmh,dscho/nmh,mcr/nmh,dscho/nmh,mcr/nmh,dscho/nmh