Update SQLBackendImpl.java

Author: AlvaroVega

cygnus-common/src/main/java/com/telefonica/iot/cygnus/backends/sql/SQLBackendImpl.java

@@ -668,7 +668,6 @@ public void upsertTransaction (LinkedHashMap<String, ArrayList<JsonElement>> agg
         Connection connection = null;
         String upsertQuerys = new String();
         String currentUpsertQuery = new String();
-        int insertedRows[];
 
         try {