refactor(ads): Yandex 광고 코드와 SDK 의존성을 제거한다

SodaLive/Sources/Chat/Talk/Room/ChatRoomViewModel.swift

@@ -277,21 +277,6 @@ final class ChatRoomViewModel: ObservableObject {
         purchaseChatQuota(chargeType: .can, canOption: canOption)
     }
 
-    func showRewardedAdForChatQuota() {
-        _Concurrency.Task {
-            let isShown = await YandexRewardedAdManager.shared.showAdIfAvailable(for: .chatRoomQuota) { [weak self] in
-                self?.purchaseChatQuota(chargeType: .ad, canOption: nil)
-            }
-
-            if !isShown {
-                await MainActor.run {
-                    errorMessage = I18n.Chat.Room.rewardedAdLoadFailed
-                    isShowPopup = true
-                }
-            }
-        }
-    }
-
     private func purchaseChatQuota(
         chargeType: ChatRoomQuotaChargeType,
         canOption: ChatRoomQuotaCanOption?
@@ -467,15 +452,6 @@ final class ChatRoomViewModel: ObservableObject {
     private func updateQuota(totalRemaining: Int) {
         self.totalRemaining = totalRemaining
         showQuotaNoticeView = totalRemaining <= 0
-        prepareRewardedAdIfNeeded(totalRemaining: totalRemaining)
-    }
-
-    private func prepareRewardedAdIfNeeded(totalRemaining: Int) {
-        guard totalRemaining <= 1 else { return }
-
-        _Concurrency.Task {
-            await YandexRewardedAdManager.shared.preloadAd(for: .chatRoomQuota)
-        }
     }
     
     private func getSavedBackgroundImageId() -> Int? {