Undo changes to PendingTransactions method visibility (#1281)

Signed-off-by: Adrian Sutton <adrian.sutton@consensys.net>

ethereum/eth/src/main/java/tech/pegasys/pantheon/ethereum/eth/transactions/PendingTransactions.java

@@ -112,7 +112,7 @@ public class PendingTransactions {
     return addTransaction;
   }
 
-  public boolean addLocalTransaction(final Transaction transaction) {
+  boolean addLocalTransaction(final Transaction transaction) {
     final boolean addTransaction =
         addTransaction(new TransactionInfo(transaction, true, clock.instant()));
     localTransactionAddedCounter.inc();
@@ -124,7 +124,7 @@ public class PendingTransactions {
     notifyTransactionDropped(transaction);
   }
 
-  public void transactionAddedToBlock(final Transaction transaction) {
+  void transactionAddedToBlock(final Transaction transaction) {
     doRemoveTransaction(transaction, true);
   }
 
@@ -267,11 +267,11 @@ public class PendingTransactions {
     }
   }
 
-  public void addTransactionListener(final PendingTransactionListener listener) {
+  void addTransactionListener(final PendingTransactionListener listener) {
     listeners.subscribe(listener);
   }
 
-  public void addTransactionDroppedListener(final PendingTransactionDroppedListener listener) {
+  void addTransactionDroppedListener(final PendingTransactionDroppedListener listener) {
     transactionDroppedListeners.subscribe(listener);
   }