Prune 2 obsolete ports

FreeBSD Ports maintainers have already deleted the following:
  editors/code-browser
  textproc/liblinebreak
Tweak archivers/zip version 3.0
Sync Mk with FreeBSD
Tweak security/sudo version 1.8.7_1
Tweak devel/libsigc++20 version 2.3.1
Tweak audio/p5-MP3-Info version 1.24
Tweak textproc/p5-YAML-Tiny version 1.51
Tweak net-mgmt/net-snmp version 5.7.2_3
Update mail/p5-MIME-Types to version 2.04
Update devel/p5-Config-Tiny to version 2.17
Tweak graphics/p5-Image-Size version 3.232
Tweak textproc/p5-XML-Parser version 2.41_1
Tweak textproc/intltool version 0.50.2
Tweak graphics/p5-Image-ExifTool version 9.04
Tweak devel/p5-Locale-gettext version 1.05_3
Update devel/p5-Time-modules to version 2013.0912
Tweak textproc/p5-String-RewritePrefix version 0.006
Tweak devel/libical version 0.48
Tweak sysutils/rsyslog6 version 6.6.0
Tweak textproc/asciidoc version 8.6.8_1