remove batch API for now

fix issue #999

h2/src/main/org/h2/mvstore/db/MVPrimaryIndex.java

@@ -114,8 +114,8 @@ public class MVPrimaryIndex extends BaseIndex {
 
         TransactionMap<Value, Value> map = getMap(session);
         Value key = ValueLong.get(row.getKey());
-        Value old = map.getLatest(key);
-        if (old != null) {
+        try {
+            if (map.put(key, ValueArray.get(row.getValueList())) != null) {
                 String sql = "PRIMARY KEY ON " + table.getSQL();
                 if (mainIndexColumn >= 0 && mainIndexColumn < indexColumns.length) {
                     sql += "(" + indexColumns[mainIndexColumn].getSQL() + ")";
@@ -124,8 +124,6 @@ public class MVPrimaryIndex extends BaseIndex {
                 e.setSource(this);
                 throw e;
             }
-        try {
-            map.put(key, ValueArray.get(row.getValueList()));
         } catch (IllegalStateException e) {
             throw mvTable.convertException(e);
         }

h2/src/main/org/h2/mvstore/db/TransactionStore.java

@@ -1198,16 +1198,6 @@ public class TransactionStore {
             return get(key, readLogId);
         }
 
-        /**
-         * Get the most recent value for the given key.
-         *
-         * @param key the key
-         * @return the value or null
-         */
-        public V getLatest(K key) {
-            return get(key, Long.MAX_VALUE);
-        }
-
         /**
          * Whether the map contains the key.
          *