remove "Not delivered events in the queue" assertion causing troubles hard to get rid of (IDEA-198778)

platform/platform-tests/testSrc/com/intellij/util/messages/MessageBusTest.java

@@ -19,6 +19,7 @@
  */
 package com.intellij.util.messages;
 
+import com.intellij.openapi.Disposable;
 import com.intellij.openapi.progress.ProcessCanceledException;
 import com.intellij.openapi.util.Disposer;
 import com.intellij.openapi.util.text.StringUtil;
@@ -365,4 +366,13 @@ public class MessageBusTest extends TestCase {
     myBus.syncPublisher(TOPIC1).t11();
     assertEvents("root 11", "child 11", "root 12", "child 12");
   }
+
+  public void testTwoHandlersBothDisconnecting() {
+    Disposable disposable = Disposer.newDisposable();
+    for (int i = 0; i < 2; i++) {
+      myBus.connect(disposable).subscribe(RUNNABLE_TOPIC, () -> Disposer.dispose(disposable));
+    }
+    myBus.syncPublisher(RUNNABLE_TOPIC).run();
+    assertTrue(Disposer.isDisposed(disposable));
+  }
 }

platform/util/src/com/intellij/util/messages/impl/MessageBusConnectionImpl.java

@@ -79,12 +79,9 @@ public class MessageBusConnectionImpl implements MessageBusConnection {
 
   @Override
   public void dispose() {
-    Queue<Message> jobs = myPendingMessages.get();
+    myPendingMessages.get();
     myPendingMessages.remove();
     myBus.notifyConnectionTerminated(this);
-    if (!jobs.isEmpty()) {
-      LOG.error("Not delivered events in the queue: " + jobs);
-    }
   }
 
   @Override