Removing unneeded scripts from zone_zuldrak.cpp (Core scripts for Amphit...

...heatre 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

and https://github.com/TrinityCore/TrinityCore/issues/11198 is the sai for this please check the cpp edit as im not too familiar with c formatting just check it will not break core d: