[Java] Enable skipped direct call cases (#7363)

* Comment out

* Refine

* Revert

java/test/src/main/java/org/ray/api/test/CrossLanguageInvocationTest.java

@@ -61,8 +61,6 @@ public class CrossLanguageInvocationTest extends BaseMultiLanguageTest {
 
   @Test
   public void testCallingPythonActor() {
-    // Python worker doesn't support direct call yet.
-    TestUtils.skipTestIfDirectActorCallEnabled();
     RayPyActor actor = Ray.createPyActor(PYTHON_MODULE, "Counter", "1".getBytes());
     RayObject res = Ray.callPy(actor, "increase", "1".getBytes());
     Assert.assertEquals(res.get(), "2".getBytes());

java/test/src/main/java/org/ray/api/test/FailureTest.java

@@ -120,9 +120,6 @@ public class FailureTest extends BaseTest {
   @Test
   public void testActorProcessDying() {
     TestUtils.skipTestUnderSingleProcess();
-    // This test case hangs if the worker to worker connection is implemented with grpc.
-    // TODO (kfstorm): Should be fixed.
-    TestUtils.skipTestIfDirectActorCallEnabled();
     RayActor<BadActor> actor = Ray.createActor(BadActor::new, false);
     try {
       actor.call(BadActor::badMethod2).get();