[tests] improve thread test printing

tests/threads/src/Main.hx

@@ -5,6 +5,8 @@ class Main {
 	static function main() {
 		var runner = new Runner();
 		runner.addCases("cases");
+		runner.onTestStart.add(test -> Sys.println("[START] " + test.fixture.target));
+		runner.onTestComplete.add(test -> Sys.println("[STOP]  " + test.fixture.target));
 		var report = Report.create(runner);
 		report.displayHeader = AlwaysShowHeader;
 		report.displaySuccessResults = NeverShowSuccessResults;

tests/threads/src/cases/DequeBrackets.hx

@@ -15,7 +15,6 @@ class DequeBrackets implements ITest {
 	@:timeout(2000)
 	public function test(async:utest.Async) {
 		Thread.create(() -> {
-			Sys.println("Running DequeBrackets");
 			var deque = new Deque();
 			var dequeMutex = new Mutex();
 			function add(open:String, close:String) {

tests/threads/src/cases/Issue8063.hx

@@ -9,7 +9,6 @@ class Issue8063 implements ITest {
 
 	@:timeout(5000)
 	function test(async:Async) {
-		Sys.println("Running Issue8063");
 		Assert.isTrue(Thread.current() == Thread.current());
 		Thread.create(() -> {
 			Assert.isTrue(Thread.current() == Thread.current());

tests/threads/src/cases/TestThreads.hx

@@ -17,7 +17,6 @@ class TestThreads implements utest.ITest
 
 	private function doTestSort()
 	{
-		Sys.println("Running TestThreads");
 		var ts = new ThreadSort();
 #if java
 		ts.maxVal *= 10;

tests/threads/src/cases/WeirdTreeSum.hx

@@ -60,7 +60,6 @@ class WeirdTreeSum implements utest.ITest {
 	@:timeout(2000)
 	public function test(async:utest.Async) {
 		Thread.create(() -> {
-			Sys.println("Running WeirdTreeSum");
 			var fileContent = File.getContent("res/tree1.txt");
 			var buf = new StringBuf();
 			buf.add("(1)\n");