ISSUE-47047: Speedup Reading tables - part2

After previous change the columnIndexes array in pg readTable is no
longer needed.
Remove it together with it's SQL _stmt_column_indexes removing one query
per readTable call.

src/org/apache/ddlutils/platform/postgresql/PostgreSqlModelLoader.java

@@ -63,7 +63,6 @@ public class PostgreSqlModelLoader extends ModelLoaderBase {
   protected PreparedStatement _stmt_oids_funcs;
   protected PreparedStatement _stmt_comments_funcs;
   protected PreparedStatement _stmt_oids_tables;
-  protected PreparedStatement _stmt_column_indexes;
 
   protected Translation _checkTranslation = new PostgreSqlCheckTranslation();
   protected Translation _SQLTranslation = new PostgreSQLStandarization();
@@ -375,9 +374,6 @@ public class PostgreSqlModelLoader extends ModelLoaderBase {
     _stmt_oids_tables = _connection
         .prepareStatement("SELECT oid, relname FROM pg_class WHERE upper(relname) = ?");
 
-    _stmt_column_indexes = _connection.prepareStatement(
-        "SELECT ordinal_position FROM information_schema.columns WHERE table_name = ? order by ordinal_position;");
-
   }
 
   @Override
@@ -616,8 +612,6 @@ public class PostgreSqlModelLoader extends ModelLoaderBase {
   // tablename from readTable with the exact case like in the database
   String tableRealName;
 
-  ArrayList<Integer> columnIndexes;
-
   @Override
   protected Table readTable(String tablename) throws SQLException {
     _stmt_oids_tables.setString(1, tablename);
@@ -631,15 +625,6 @@ public class PostgreSqlModelLoader extends ModelLoaderBase {
 
     Table t = super.readTable(tableRealName);
 
-    columnIndexes = new ArrayList<Integer>();
-    _stmt_column_indexes.setString(1, tableRealName);
-    fillList(_stmt_column_indexes, new RowFiller() {
-      @Override
-      public void fillRow(ResultSet r) throws SQLException {
-        columnIndexes.add(r.getInt(1));
-      }
-    });
-
     return t;
   }