Improve coding style and remove dead code

Author: nyamsprod

src/Domain.php

@@ -28,7 +28,6 @@ final class Domain implements DomainName
     private const IDNA_2003 = 'IDNA_2003';
     private const IDNA_2008 = 'IDNA_2008';
     private const REGEXP_IDN_PATTERN = '/[^\x20-\x7f]/';
-
     // Note that unreserved is purposely missing . as it is used to separate labels.
     private const REGEXP_REGISTERED_NAME = '/(?(DEFINE)
         (?<unreserved>[a-z0-9_~\-])
@@ -37,7 +36,6 @@ final class Domain implements DomainName
         (?<reg_name>(?:(?&unreserved)|(?&sub_delims)|(?&encoded)){1,63})
     )
     ^(?:(?&reg_name)\.){0,126}(?&reg_name)\.?$/ix';
-
     private const REGEXP_URI_DELIMITERS = '/[:\/?#\[\]@ ]/';
 
     /** @var array<int, string> */

src/Idna.php

@@ -21,7 +21,6 @@
 final class Idna
 {
     private const REGEXP_IDNA_PATTERN = '/[^\x20-\x7f]/';
-
     /**
      * IDNA options.
      */
@@ -33,7 +32,6 @@ final class Idna
     public const IDNA_NONTRANSITIONAL_TO_ASCII   = 0x10;
     public const IDNA_NONTRANSITIONAL_TO_UNICODE = 0x20;
     public const IDNA_CHECK_CONTEXTO             = 0x40;
-
     /**
      * IDNA errors.
      */

src/Storage/TimeToLiveTest.php

@@ -7,7 +7,6 @@
 use DateInterval;
 use DateTimeImmutable;
 use DateTimeZone;
-use mysql_xdevapi\CollectionModify;
 use PHPUnit\Framework\TestCase;
 use Stringable;
 

src/Storage/TopLevelDomainListStorageFactory.php

@@ -1,6 +1,5 @@
 <?php
 
-
 declare(strict_types=1);
 
 namespace Pdp\Storage;