Removed useless code

Author: andrey-helldar

src/Groups/Group.php

@@ -6,7 +6,6 @@
 
 use DragonCode\SizeSorter\Enums\GroupEnum;
 use Illuminate\Support\Str;
-use Illuminate\Support\Stringable;
 
 use function implode;
 
@@ -28,11 +27,6 @@ public static function normalize(mixed $value, int|string $key): string
         return implode(static::Delimiter, [static::$group->value, $key, static::prepare($value)]);
     }
 
-    public static function value(string $key): Stringable
-    {
-        return Str::of($key)->afterLast(static::Delimiter);
-    }
-
     protected static function prepare(mixed $value): string
     {
         return $value;

src/Normalizers/KeyNormalizer.php

@@ -10,7 +10,7 @@
 use function is_bool;
 use function is_numeric;
 
-class KeyNormalizer extends Normalizer
+class KeyNormalizer
 {
     public static function normalize(mixed $value): string
     {

src/Normalizers/Normalizer.php

@@ -8,7 +8,7 @@
 use DragonCode\SizeSorter\Groups\Group;
 use Illuminate\Support\Str;
 
-class NumberSorter extends Sorter
+class NumberSorter
 {
     public static function callback(int $arrow = 1): Closure
     {