Fix build

mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/QQAndroidBotNetworkHandler.kt

@@ -24,7 +24,6 @@ import net.mamoe.mirai.qqandroid.event.ForceOfflineEvent
 import net.mamoe.mirai.qqandroid.event.PacketReceivedEvent
 import net.mamoe.mirai.qqandroid.network.protocol.data.proto.MsgSvc
 import net.mamoe.mirai.qqandroid.network.protocol.packet.*
-import net.mamoe.mirai.qqandroid.network.protocol.packet.chat.TroopManagement
 import net.mamoe.mirai.qqandroid.network.protocol.packet.chat.receive.MessageSvc
 import net.mamoe.mirai.qqandroid.network.protocol.packet.list.FriendList
 import net.mamoe.mirai.qqandroid.network.protocol.packet.login.LoginPacket
@@ -32,7 +31,6 @@ import net.mamoe.mirai.qqandroid.network.protocol.packet.login.StatSvc
 import net.mamoe.mirai.utils.*
 import net.mamoe.mirai.utils.io.*
 import kotlin.coroutines.CoroutineContext
-import kotlin.coroutines.EmptyCoroutineContext
 import kotlin.jvm.Volatile
 
 @Suppress("MemberVisibilityCanBePrivate")
@@ -267,15 +265,6 @@ internal class QQAndroidBotNetworkHandler(bot: QQAndroidBot) : BotNetworkHandler
         return list
     }
 
-    suspend fun mute(member: Member, time: Int) {
-        bot.logger.info("mute..")
-        val data = TroopManagement.Mute(
-            client = bot.client,
-            member = member,
-            timeInSecond = time
-        ).sendAndExpect<TroopManagement.Mute.Response>()
-    }
-
     /**
      * 缓存超时处理的 [Job]. 超时后将清空缓存, 以免阻碍后续包的处理
      */