refactor: comment out deprecated channelNo field in Channel model

prisma/mongo/schema/channel.prisma

@@ -1,7 +1,7 @@
 model Channel {
   id           String   @id @map("_id") @default(auto()) @db.ObjectId
   channelId    String   @unique
-  channelNo    Int?     @unique
+//  channelNo    Int?     @unique
 
   name         String   @unique                   // 渠道名称
   landingUrl   String                             // 最新网址