INSTALL, 9c, 9l: improve handling of *BSD (#302)

bin/9l

@@ -11,19 +11,6 @@ nmflags=""
 extralibs="-lm"
 tag="${SYSNAME:-`uname`}-${OBJTYPE:-`uname -m`}"
 case "$tag" in
-*FreeBSD*)
-	ld=${CC9:-gcc}
-	userpath=true
-	extralibs="$extralibs -lutil"
-	case "`uname -r`" in
-	5.2.*)
-		extralibs="$extralibs -lkse"
-		;;
-	[5-9].*|1[0-9].*)
-		extralibs="$extralibs -lpthread"
-		;;
-	esac
-	;;
 *DragonFly*|*BSD*)
 	ld=${CC9:-gcc}
 	userpath=true