Do not describe portsnap(8) as a way to manage /usr/ports

svn path=/head/; revision=363903

share/man/man7/build.7

@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd May 3, 2020
+.Dd August 5, 2020
 .Dt BUILD 7
 .Os
 .Sh NAME
@@ -41,10 +41,8 @@ and
 .Pa /usr/ports .
 These directories may be initially empty or non-existent until updated with
 .Xr svn 1
-or
-.Xr svnlite 1
-or
-.Xr portsnap 8 .
+(or
+.Xr svnlite 1 ) .
 Directory
 .Pa /usr/src
 contains the
@@ -852,7 +850,6 @@ manpage first appeared in
 .Xr tests 7 ,
 .Xr config 8 ,
 .Xr mergemaster 8 ,
-.Xr portsnap 8 ,
 .Xr reboot 8 ,
 .Xr shutdown 8
 .Sh AUTHORS