This is just the Civ4DiplomacyInfos.xml file with all the custom leader first contacts removed. Instead, all leaders will use a random, generic-sounding first contact.
This would be useful in mods where you are removing some (or all) of the standard leaderheads. It saves you the trouble of having to remove the first responses manually. Without removing them you would get xml errors.
To use it, just place it in the GameInfo folder of your mod.
If you have any questions or comments, please post them in the discussion thread: http://forums.civfanatics.com/showthread.php?t=421645