remove redundant private modifier from various enum constructors

core/src/main/java/org/bitcoinj/core/InventoryItem.java

@@ -35,7 +35,7 @@ public class InventoryItem {
 
         public final int code;
 
-        private Type(int code) {
+        Type(int code) {
             this.code = code;
         }
 

core/src/main/java/org/bitcoinj/core/Transaction.java

@@ -565,7 +565,7 @@ public class Transaction extends ChildMessage {
         /**
          * @param value
          */
-        private SigHash(final int value) {
+        SigHash(final int value) {
             this.value = value;
         }
 

core/src/main/java/org/bitcoinj/script/Script.java

@@ -64,7 +64,7 @@ public class Script {
 
         public final int id;
 
-        private ScriptType(int id) {
+        ScriptType(int id) {
             this.id = id;
         }
     }

core/src/main/java/org/bitcoinj/script/ScriptError.java

@@ -82,7 +82,7 @@ public enum ScriptError {
     private final String mnemonic;
     private static final Map<String, ScriptError> mnemonicToScriptErrorMap;
 
-    private ScriptError(String name) {
+    ScriptError(String name) {
         this.mnemonic = name;
     }