removeFromMaster method
Implementation
void removeFromMaster(String masterId) {
final master = _masters[masterId]!;
for (final combination in master.combinations!) {
final cardId =
CardId.fromCombination(combination: combination, master: master.id);
_state!.cardStates.remove(cardId.uniqueId);
}
_cachedCardsSchedule = null;
_masters.remove(masterId);
}