fix build

Author: DatL4g

src/commonMain/kotlin/dev/datlag/k2k/connect/ConnectionServer.kt

@@ -11,7 +11,6 @@ import io.ktor.network.sockets.Socket
 import io.ktor.network.sockets.aSocket
 import io.ktor.network.sockets.openReadChannel
 import io.ktor.network.sockets.tcpNoDelay
-import io.ktor.utils.io.availableForRead
 import io.ktor.utils.io.core.use
 import io.ktor.utils.io.readAvailable
 import kotlinx.coroutines.CoroutineScope