Prune 24 obsolete ports

FreeBSD Ports maintainers have already deleted the following:
  devel/llvm32
  devel/py-checkmanifest
  games/empire
  games/hex
  graphics/bbrb
  graphics/fpc-imlib
  graphics/gtkgraph
  graphics/imagesort
  graphics/imlib
  graphics/pornview
  graphics/show
  japanese/ebview
  japanese/xjtext
  lang/clang32
  misc/gnomehier
  multimedia/ffmpeg24
  www/drupal7-jailadmin
  www/drupal7-vulnscan
  www/neon29
  x11-drivers/xf86-video-newport
  x11-drivers/xf86-video-tga
  x11-toolkits/fpc-gnome1
  x11-wm/enlightenment-docs
  x11/peeper
Update ports-mgmt/pkg to version 1.4.2