Remove taunt voiceline duplicates to fix international dubs

[condor00fr]

Since the inclusion of community taunts into the game we've seen several duplicates of pre-existing voicelines for each of the classes being copy-pasted in game. Not only does it uncessessary grow file sizes but the original voicelines we'd actually want to keep were all dubbed previously for all internationnal versions of the games. Yet since the duplicates are called in game instead the correct dubbed lines aren't used when they should be, thus the dubbed lines are not applied.

Here's a quick list of every duplicates I could find that literally serves no purposes other than insulting the amazing work of professional writers and dubbers:

root\sound\vo\taunts\heavy\heavy_laughhappy02.mp3 root\sound\vo\taunts\demoman_laughevil01.mp3 root\sound\vo\taunts\demoman_laughshort01.mp3 root\sound\vo\taunts\demoman_positivevocalization01.mp3 root\sound\vo\taunts\demo\demoman_laughhappy02.mp3 root\sound\vo\taunts\engy\engineer_cheers02.mp3 root\sound\vo\taunts\engy\engineer_laughhappy03.mp3 root\sound\vo\taunts\spy\spy_taunts_head_doctor_you_suck.mp3 (Literally an unedited duplicate of spy_taunt15.mp3)