Remove the update callback on all events

Not only was the extra call to the update callback in the AchievementEventHandler method unnecessary, it was getting called on events that don't even need to be tracked here, causing a lot of lag when it turned out one achievement was repeatedly spamming Achievement Reset Events as a shortcut.

Source/Core/Core/AchievementManager.cpp

@@ -751,8 +751,6 @@ void AchievementManager::AchievementEventHandler(const rc_runtime_event_t* runti
       break;
     }
   }
-
-  m_update_callback();
 }
 
 std::recursive_mutex& AchievementManager::GetLock()