Remove obsolete sum

man/man1/Makefile

@@ -1,6 +1,6 @@
 MAN=	ash.1 at.1 banner.1 basename.1 \
 	bsfilt.1 cal.1 cawf.1 chgrp.1 \
-	chmod.1 cksum.1 clear.1 cmp.1 comm.1 compress.1 \
+	chmod.1 clear.1 cmp.1 comm.1 compress.1 \
 	cp.1 crc.1 crontab.1 ctags.1 dd.1 \
 	df.1 dhrystone.1 dosdir.1 dosread.1 doswrite.1 \
 	dumpcore.1 echo.1 eject.1 elvis.1 elvrec.1 \
@@ -16,7 +16,7 @@ MAN=	ash.1 at.1 banner.1 basename.1 \
 	profile.1 ps.1 pwd.1 rcp.1 recwave.1 \
 	ref.1 remsync.1 rget.1 rlogin.1 rsh.1 rz.1 \
 	shar.1 acksize.1 sleep.1 sort.1   spell.1 \
-	split.1 stty.1 sum.1 svc.1 svrctl.1 \
+	split.1 stty.1 svc.1 svrctl.1 \
 	synctree.1 sysenv.1 sz.1 tail.1 tee.1 telnet.1 template.1 \
 	term.1 termcap.1 tget.1 time.1 tr.1 true.1 \
 	truncate.1 tsort.1 tty.1 umount.1 uname.1 unexpand.1 \

man/man1/cksum.1

@@ -1,38 +0,0 @@
-.TH CKSUM 1
-.SH NAME
-cksum \- display file checksum and size
-.SH SYNOPSIS
-\fBcksum \fR[\fIfile\fR ...]\fR
-.br
-.de FL
-.TP
-\\fB\\$1\\fR
-\\$2
-..
-.de EX
-.TP 20
-\\fB\\$1\\fR
-# \\$2
-..
-.SH EXAMPLES
-.TP 20
-.B cksum
-# Display CRC and size of \fIstdin\fR
-.TP 20
-.B cksum *.c
-# Display CRC and size of \fI.c\fP files
-.SH DESCRIPTION
-.PP
-.I Cksum
-calculates and writes to standard output the 32-bits CRC of the input
-.I files ,
-or of stdin if no
-.I files
-were specified. The size in bytes of each
-.I file
-will be displayed after a space. The name of each
-.I file
-will be displayed after another space.
-.SH "SEE ALSO"
-.BR crc (1),
-.BR sum (1).

man/man1/sum.1

@@ -1,31 +0,0 @@
-.TH SUM 1
-.SH NAME
-sum \- compute the checksum and block count of a file
-.SH SYNOPSIS
-\fBsum \fIfile\fR
-.br
-.de FL
-.TP
-\\fB\\$1\\fR
-\\$2
-..
-.de EX
-.TP 20
-\\fB\\$1\\fR
-# \\$2
-..
-.SH EXAMPLES
-.TP 20
-.B sum /user/ast/xyz
-# Checksum \fI/user/ast/xyz
-.SH DESCRIPTION
-.PP
-.I Sum
-computes the checksum of one or more files.
-It is most often used to see if a file copied from another machine has
-been correctly received.
-This program works best when both machines use the same checksum algorithm.
-See also \fIcrc\fR.
-.SH "SEE ALSO"
-.BR cksum (1),
-.BR crc (1).