minor formatting cleanup

jackson/src/test/java/org/baeldung/jackson/bidirection/Item.java

@@ -1,6 +1,5 @@
 package org.baeldung.jackson.bidirection;
 
-
 public class Item {
     public int id;
     public String itemName;

jackson/src/test/java/org/baeldung/jackson/bidirection/ItemWithIgnore.java

@@ -1,6 +1,5 @@
 package org.baeldung.jackson.bidirection;
 
-
 public class ItemWithIgnore {
     public int id;
     public String itemName;

jackson/src/test/java/org/baeldung/jackson/bidirection/ItemWithSerializer.java

@@ -1,6 +1,5 @@
 package org.baeldung.jackson.bidirection;
 
-
 public class ItemWithSerializer {
     public int id;
     public String itemName;

jackson/src/test/java/org/baeldung/jackson/test/JacksonBidirectionRelationTest.java

@@ -116,4 +116,3 @@ public class JacksonBidirectionRelationTest {
     }
 
 }
-