[feature/passwords] Remove unnecessary specification of namespace in drivers

PHPBB3-11610

phpBB/phpbb/passwords/driver/base.php

@@ -12,7 +12,7 @@ namespace phpbb\passwords\driver;
 /**
 * @package passwords
 */
-abstract class base implements \phpbb\passwords\driver\driver_interface
+abstract class base implements driver_interface
 {
 	/** @var phpbb\config\config */
 	protected $config;

phpBB/phpbb/passwords/driver/bcrypt.php

@@ -12,7 +12,7 @@ namespace phpbb\passwords\driver;
 /**
 * @package passwords
 */
-class bcrypt extends \phpbb\passwords\driver\base
+class bcrypt extends base
 {
 	const PREFIX = '$2a$';
 

phpBB/phpbb/passwords/driver/bcrypt_2y.php

@@ -12,7 +12,7 @@ namespace phpbb\passwords\driver;
 /**
 * @package passwords
 */
-class bcrypt_2y extends \phpbb\passwords\driver\bcrypt
+class bcrypt_2y extends bcrypt
 {
 	const PREFIX = '$2y$';
 

phpBB/phpbb/passwords/driver/phpass.php

@@ -12,7 +12,7 @@ namespace phpbb\passwords\driver;
 /**
 * @package passwords
 */
-class phpass extends \phpbb\passwords\driver\salted_md5
+class phpass extends salted_md5
 {
 	const PREFIX = '$P$';
 

phpBB/phpbb/passwords/driver/salted_md5.php

@@ -40,7 +40,7 @@ namespace phpbb\passwords\driver;
 /**
 * @package passwords
 */
-class salted_md5 extends \phpbb\passwords\driver\base
+class salted_md5 extends base
 {
 	const PREFIX = '$H$';