bug fix: Remove cheking version for postgresql < 9.0

system/database/drivers/postgre/postgre_driver.php

@@ -333,11 +333,11 @@ class CI_DB_postgre_driver extends CI_DB {
 		$table	= func_num_args() > 0 ? func_get_arg(0) : NULL;
 		$table	= func_num_args() > 0 ? func_get_arg(0) : NULL;
 		$column	= func_num_args() > 1 ? func_get_arg(1) : NULL;
 		$column	= func_num_args() > 1 ? func_get_arg(1) : NULL;
 
 
-		if ($table == NULL && $v >= '8.1')
+		if ($table == NULL)
 		{
 		{
 			$sql='SELECT LASTVAL() as ins_id';
 			$sql='SELECT LASTVAL() as ins_id';
 		}
 		}
-		elseif ($table != NULL && $column != NULL && $v >= '8.0')
+		elseif ($table != NULL && $column != NULL)
 		{
 		{
 			$sql = sprintf("SELECT pg_get_serial_sequence('%s','%s') as seq", $table, $column);
 			$sql = sprintf("SELECT pg_get_serial_sequence('%s','%s') as seq", $table, $column);
 			$query = $this->query($sql);
 			$query = $this->query($sql);