Update BoundaryTraversalTest.java

Author: xuyang471

src/test/java/com/thealgorithms/datastructures/trees/BoundaryTraversalTest.java

@@ -4,15 +4,13 @@
 
 import java.util.Collections;
 import java.util.List;
-
 import org.junit.jupiter.api.Test;
 
 /**
  *
  */
 public class BoundaryTraversalTest {
 
-
     @Test
     public void testNullRoot() {
         assertEquals(Collections.emptyList(), BoundaryTraversal.boundaryTraversal(null));
@@ -107,6 +105,4 @@ public void testRightSkewedTree() {
         assertEquals(expected, BoundaryTraversal.boundaryTraversal(root));
         assertEquals(expected, BoundaryTraversal.iterativeBoundaryTraversal(root));
     }
-
-
 }