# Back up your Network prefpane
zip -r ~/Desktop/Network.prefPane.zip \ 
  /System/Library/PreferencePanes/Network.prefPane

# Remove all .lproj folders from Network.prefPane that you *don't*
# use.  The command below is for those who only use English.
sudo rm /System/Library/PreferencePanes/Network.prefPane/Contents/Resources/!(English).lproj