Don't unnecessarily unsubscribe from closed group PNs

We don't need to do this anymore as we now have the ability to ignore PNs in the notification service extension

Session/Conversations/Settings/OWSConversationSettingsViewController.m

@@ -861,17 +861,6 @@ CGFloat kIconViewLength = 24;
             [self.thread updateWithMutedUntilDate:nil transaction:transaction];
         }];
     }
-    if (self.isClosedGroup) {
-        NSString *groupPublicKey = [LKGroupUtilities getDecodedGroupID:((TSGroupThread *)self.thread).groupModel.groupId];
-        NSString *userPublicKey = [SNGeneralUtilities getUserPublicKey];
-        if (uiSwitch.isOn) {
-            [[LKPushNotificationAPI performOperation:ClosedGroupOperationUnsubscribe
-                forClosedGroupWithPublicKey:groupPublicKey userPublicKey:userPublicKey] retainUntilComplete];
-        } else {
-            [[LKPushNotificationAPI performOperation:ClosedGroupOperationSubscribe
-                forClosedGroupWithPublicKey:groupPublicKey userPublicKey:userPublicKey] retainUntilComplete];
-        }
-    }
 }
 
 - (void)blockConversationSwitchDidChange:(id)sender

SessionMessagingKit/Sending & Receiving/Notifications/PushNotificationAPI.swift

@@ -88,13 +88,7 @@ public final class PushNotificationAPI : NSObject {
         }
         // Subscribe to all closed groups
         Storage.shared.getUserClosedGroupPublicKeys().forEach { closedGroupPublicKey in
-            let groupID = LKGroupUtilities.getEncodedClosedGroupIDAsData(closedGroupPublicKey)
-            let threadOrNil = TSGroupThread.fetch(uniqueId: TSGroupThread.threadId(fromGroupId: groupID))
-            if threadOrNil?.isMuted == true {
-                // Do nothing
-            } else {
-                performOperation(.subscribe, for: closedGroupPublicKey, publicKey: publicKey)
-            }
+            performOperation(.subscribe, for: closedGroupPublicKey, publicKey: publicKey)
         }
         return promise
     }