Remove WWW entries moved into port Makefiles
Commit b7f05445c00f has added WWW entries to port Makefiles based on
WWW: lines in pkg-descr files.
This commit removes the WWW: lines of moved-over URLs from these
pkg-descr files.
Approved by: portmgr (tcberner)
arp-scan is a command-line tool that uses the ARP
protocol to discover and fingerprint IP hosts on
the local network.
WWW: http://www.nta-monitor.com/tools/arp-scan/
PR: ports/127963
Submitted by: Wen Heping <wenheping at gmail.com>