remove debugging code accidentally left in ftp/cmds.c

remove debugging code accidentally left in ftp/cmds.c

Debugging code I added months ago in ftp/cmds.c and forgot to remove
has apparently escaped notice until now.  Markus Moeller reports
seeing a bunch of "cmds.c: at line (number)" lines printed when he
connects to a server.

This patch removes those lines.  A couple other debugging statements
that test for the debug flag being set on the command line are left
in.

ticket: new

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@19520 dc483132-0cff-0310-8789-dd5450dbe970