Remove obsolete Repository.commit(long) method

ethereumj-core/src/main/java/org/ethereum/core/Repository.java

@@ -175,8 +175,6 @@ public interface Repository extends org.ethereum.facade.Repository{
      */
     void rollback();
 
-    void commit(long blockNumber);
-
     /**
      * Return to one of the previous snapshots
      * by moving the root.

ethereumj-core/src/main/java/org/ethereum/vm/program/Storage.java

@@ -145,11 +145,6 @@ public void commit() {
         repository.commit();
     }
 
-    @Override
-    public void commit(long blockNumber) {
-        repository.commit(blockNumber);
-    }
-
     @Override
     public void rollback() {
         repository.rollback();

ethereumj-core/src/test/java/org/ethereum/jsontestsuite/suite/runners/StateTestRunner.java

@@ -60,7 +60,7 @@ protected ProgramResult executeTransaction(Transaction tx) {
             System.exit(-1);
         }
 
-        track.commit(blockchain.getBestBlock().getNumber());
+        track.commit();
         return executor.getResult();
     }