Refine Java worker code (#3735)

java/test/src/main/java/org/ray/api/benchmark/RayBenchmarkTest.java

@@ -12,7 +12,6 @@ import org.ray.api.RayActor;
 import org.ray.api.RayObject;
 import org.ray.api.annotation.RayRemote;
 import org.ray.api.test.BaseTest;
-import org.ray.runtime.util.logger.RayLog;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 

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

@@ -8,7 +8,6 @@ import org.junit.Test;
 import org.ray.api.Ray;
 import org.ray.api.RayObject;
 import org.ray.api.WaitResult;
-import org.ray.runtime.util.logger.RayLog;
 
 /**
  * Integration test for Ray.*
@@ -30,8 +29,6 @@ public class RayMethodsTest extends BaseTest {
     double f1 = f1Id.get();
     Object n1 = n1Id.get();
 
-    RayLog.rapp.info("Strings: " + ss.get(0) + ss.get(1) + " int: " + i1 + " double: " + f1
-        + " null: " + n1);
     Assert.assertEquals("Hello World!", ss.get(0) + ss.get(1));
     Assert.assertEquals(1, i1);
     Assert.assertEquals(3.14, f1, Double.MIN_NORMAL);