Removing unneeded scripts from zone_zuldrak.cpp (Core scripts for Amphitheatre of anguish chain

removing cpp scripts scripts, please check this as dont know much about c but have just removed everything relating to amphitheatre npcs, or lines 168 - 1143 and 1869,1870,1871,1872,1873,1876 or the complete scripts for all involved npcs and the individual lines from void AddSC_zuldrak