Reworked event hook to a system with pre-allocated memory, owned by the battle. This deals with cleaning up event data memory.

CInterface/Battling/Battle.cpp

@@ -76,7 +76,4 @@ export bool CreatureLib_Battle_HasVolatileScript(Battle* p, const char* key) {
 
 export uint8_t CreatureLib_Battle_RegisterEventListener(Battle* p, void (*func)(const EventData*)) {
     Try(p->RegisterEventListener(func);)
-}
-export uint8_t CreatureLib_Battle_TriggerEventListener(Battle* p, EventData* data) {
-    Try(p->TriggerEventListener(data);)
 }