Remove obsolete references to sysinstall.

This change is not intended for MFC.

PR:		docs/177570
Submitted by:	Garrett Cooper <yaneurabeya@gmail.com> (partial)
Approved by:	bcr (mentor)

share/man/man5/rc.conf.5

@@ -38,8 +38,7 @@ details for any potential network interfaces and which services should be
 started up at system initial boot time.
 In new installations, the
 .Nm
-file is generally initialized by the system installation utility,
-.Xr sysinstall 8 .
+file is generally initialized by the system installation utility.
 .Pp
 The purpose of
 .Nm
@@ -2452,10 +2451,6 @@ This command is intended to
 synchronize the system clock only
 .Em once
 from some standard reference.
-An option to set this up initially
-(from a list of known servers) is also provided by the
-.Xr sysinstall 8
-program when the system is first installed.
 .It Va ntpdate_config
 .Pq Vt str
 Configuration file for

share/man/man7/hier.7

@@ -62,16 +62,12 @@ see
 .El
 .It Pa /cdrom/
 default mount point for CD-ROM drives
-(created by
-.Xr sysinstall 8 )
 .It Pa /compat/
 normally a link to
 .Pa /usr/compat .
 If not, then the
 .Pa /usr/compat
 comments apply
-(created by
-.Xr sysinstall 8 )
 .It Pa /dev/
 device special files managed by
 .Xr devfs 5
@@ -84,9 +80,6 @@ see
 .It Pa net/
 network devices
 .El
-.It Pa /dist/
-mount point used by
-.Xr sysinstall 8
 .It Pa /etc/
 system configuration files and scripts
 .Pp
@@ -190,8 +183,6 @@ common utilities, programming tools, and applications
 .It Pa compat/
 files needed to support binary compatibility with other operating systems,
 such as Linux
-(created by
-.Xr sysinstall 8 )
 .It Pa games/
 useful and semi-frivolous programs
 .It Pa include/