IJPL-233059 Remove assertion on VFS events count

Now it's flaky between 1 and 2 (only 'parent' or 'parent' and 'excluded').
In both cases 'excluded' is created as assertNotNull succeeds.
To be honest, I don't even understand why it was 1. The test is supposed to assert that event for the child is also fired.
The test relies on the timing of fs events and on the fact that events are fired on EDT (the thread where the test is run).

GitOrigin-RevId: 3718a22282f039226a0476e6a9ffb84316547068

java/java-tests/testSrc/com/intellij/roots/RootsChangedTest.java

@@ -537,23 +537,17 @@ public class RootsChangedTest extends JavaModuleTestCase {
     };
     connect.subscribe(VirtualFileManager.VFS_CHANGES, rogueListenerWhichStupidlyGetChildrenRightAway);
 
-    myModuleRootListener.reset();
-
     File iParent = new File(ioRoot, "parent");
     assertTrue(iParent.mkdirs());
-    TimeoutUtil.sleep(1000); // wait for fsnotifier to pick up the change
     vRoot.refresh(true, true);
 
     TimeoutUtil.sleep(1000); // hope that now async refresh has found "parent" and is waiting for EDT to fire events
 
     File ioExcluded = new File(iParent, "excluded");
     assertTrue(ioExcluded.mkdirs());
-    TimeoutUtil.sleep(1000); // wait for fsnotifier to pick up the change
     PlatformTestUtil.dispatchAllInvocationEventsInIdeEventQueue(); // now events are fired
 
     assertNotNull(LocalFileSystem.getInstance().refreshAndFindFileByIoFile(ioExcluded));
-
-    myModuleRootListener.assertEventsCount(1);
   }
 
   public void testChangesInsideCompilerOutputDirectoryMustNotLeadToRootsChange() {