Remove unused prettyMapper from Jackson

Author: chacham

common/src/main/java/com/linecorp/centraldogma/internal/jackson/Jackson.java

@@ -55,16 +55,13 @@
 
 public abstract class Jackson {
     private final ObjectMapper compactMapper;
-    private final ObjectMapper prettyMapper;
     private final JsonFactory compactFactory;
     private final JsonFactory prettyFactory;
 
     public static final NullNode nullNode = NullNode.instance;
 
-    protected Jackson(ObjectMapper compactMapper, ObjectMapper prettyMapper,
-                      JsonFactory compactFactory, JsonFactory prettyFactory) {
+    protected Jackson(ObjectMapper compactMapper, JsonFactory compactFactory, JsonFactory prettyFactory) {
         this.compactMapper = compactMapper;
-        this.prettyMapper = prettyMapper;
         this.compactFactory = compactFactory;
         this.prettyFactory = prettyFactory;
 

common/src/main/java/com/linecorp/centraldogma/internal/jackson/JacksonJson.java

@@ -93,7 +93,7 @@ public MappingProvider mappingProvider() {
     }
 
     private JacksonJson() {
-        super(compactMapper, prettyMapper, compactFactory, prettyFactory);
+        super(compactMapper, compactFactory, prettyFactory);
     }
 
     @Override

common/src/main/java/com/linecorp/centraldogma/internal/jackson/JacksonYaml.java

@@ -39,7 +39,7 @@ public final class JacksonYaml extends Jackson {
     public static final Jackson INSTANCE = new JacksonYaml();
 
     private JacksonYaml() {
-        super(yamlMapper, yamlMapper, yamlFactory, yamlFactory);
+        super(yamlMapper, yamlFactory, yamlFactory);
     }
 
     @Override