Ramparts: correct some code to trigger boss aggro

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Автор: miraco

Ramparts: correct some code to trigger boss aggroremove some not needed code, hellfire sentry are never temporarysummons

Подробнее... (https://github.com/cmangos/mangos-wotlk/commit/1c5ef6d50bc30065750eee932f22f27a152959c0)