Remove no longer needed warning suppression

Closes #482

Author: LouisCAD

core/kotlinx-coroutines-core/src/EventLoop.kt

@@ -137,7 +137,6 @@ internal abstract class EventLoopBase: CoroutineDispatcher(), Delay, EventLoop {
         return nextTime
     }
 
-    @Suppress("MemberVisibilityCanBePrivate") // todo: remove suppress when KT-22030 is fixed
     internal fun execute(task: Runnable) {
         if (enqueueImpl(task)) {
             // todo: we should unpark only when this delayed task became first in the queue
@@ -346,4 +345,4 @@ private class EventLoopImpl(thread: Thread) : ThreadEventLoop(thread) {
 internal class BlockingEventLoop(thread: Thread) : ThreadEventLoop(thread) {
     @Volatile
     public override var isCompleted: Boolean = false
-}
+}