Remove mentions of actor builder in K/N readme

Fixes #832

Author: qwwdfsad

native/kotlinx-coroutines-core-native/README.md

@@ -9,7 +9,6 @@ Coroutine builder functions:
 | [launch]      | [Job]         | [CoroutineScope] | Launches coroutine that does not have any result 
 | [async]       | [Deferred]    | [CoroutineScope] | Returns a single value with the future result
 | [produce][kotlinx.coroutines.channels.produce]     | [ReceiveChannel][kotlinx.coroutines.channels.ReceiveChannel] | [ProducerScope][kotlinx.coroutines.channels.ProducerScope]  | Produces a stream of elements
-| [actor][kotlinx.coroutines.channels.actor]     | [SendChannel][kotlinx.coroutines.channels.SendChannel] | [ActorScope][kotlinx.coroutines.channels.ActorScope]  | Processes a stream of messages
 | [runBlocking] | `T`           | [CoroutineScope] | Blocks the thread while the coroutine runs
 
 Coroutine dispatchers implementing [CoroutineDispatcher]:
@@ -96,12 +95,10 @@ helper function. [NonCancellable] job object is provided to suppress cancellatio
 [kotlinx.coroutines.channels.produce]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/produce.html
 [kotlinx.coroutines.channels.ReceiveChannel]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/-receive-channel/index.html
 [kotlinx.coroutines.channels.ProducerScope]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/-producer-scope/index.html
-[kotlinx.coroutines.channels.actor]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/actor.html
-[kotlinx.coroutines.channels.SendChannel]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/-send-channel/index.html
-[kotlinx.coroutines.channels.ActorScope]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/-actor-scope/index.html
 [kotlinx.coroutines.channels.Channel]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/-channel/index.html
 [kotlinx.coroutines.channels.SendChannel.send]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/-send-channel/send.html
 [kotlinx.coroutines.channels.ReceiveChannel.receive]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/-receive-channel/receive.html
+[kotlinx.coroutines.channels.SendChannel]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/-send-channel/index.html
 [kotlinx.coroutines.channels.SendChannel.onSend]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/-send-channel/on-send.html
 [kotlinx.coroutines.channels.SendChannel.offer]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/-send-channel/offer.html
 [kotlinx.coroutines.channels.ReceiveChannel.onReceive]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/-receive-channel/on-receive.html