diff --git a/com_oauthserver/administrator/src/Helper/CasesHelper.php b/com_oauthserver/administrator/src/Helper/CasesHelper.php
deleted file mode 100644
index 72244a5..0000000
--- a/com_oauthserver/administrator/src/Helper/CasesHelper.php
+++ /dev/null
@@ -1,138 +0,0 @@
-<?php
-
-namespace Webmasterskaya\Component\OauthServer\Administrator\Helper;
-
-/**
- * Class for convert string to different cases styles
- * such as camelCase, kebab-case etc.
- *
- * @since       version
- */
-class CasesHelper
-{
-    /**
-     * Convert string to snake_case_style
-     *
-     * @param string $string input string
-     *
-     * @return string
-     *
-     * @since version
-     */
-    public static function snakeize(string $string): string
-    {
-        $string = static::clean($string, '_');
-
-        return strtolower($string);
-    }
-
-    /**
-     * Convert string to kebab-case-style
-     *
-     * @param string $string input string
-     *
-     * @return string
-     *
-     * @since version
-     */
-    public static function kebabize(string $string): string
-    {
-        $string = static::clean($string, '-');
-
-        return strtolower($string);
-    }
-
-    /**
-     * Convert string to dotted.case.style
-     *
-     * @param string $string input string
-     *
-     * @return string
-     *
-     * @since version
-     */
-    public static function dottedize(string $string)
-    {
-        $string = static::clean($string, '.');
-
-        return strtolower($string);
-    }
-
-    /**
-     * Convert string to lowerCameCase, UpperCamelCase, PascalCase styles
-     *
-     * @param string $string input string
-     * @param bool $uc_first true - to UpperCamelCase, false - to lowerCamelCase
-     *
-     * @return string
-     *
-     * @since version
-     */
-    public static function camelize(string $string, bool $uc_first = false): string
-    {
-        $string = self::snakeize($string);
-        $string = ucwords($string, '_');
-        $string = str_replace('_', '', $string);
-
-        return $uc_first ? ucfirst($string) : lcfirst($string);
-    }
-
-    /**
-     * Convert string to PascalCase (without starting digits)
-     *
-     * @param string $string input string
-     *
-     * @return string
-     *
-     * @since version
-     */
-    public static function classify(string $string): string
-    {
-        $string = self::camelize($string, true);
-        $string = preg_replace('/^\d+/', '', $string);
-
-        return ucfirst($string);
-    }
-
-    /**
-     * @param string $string
-     * @param string $replacement
-     *
-     * @return string
-     *
-     * @since version
-     */
-    private static function clean(string $string, string $replacement): string
-    {
-        if (empty($replacement)) {
-            throw new \RuntimeException('The replacement cannot be empty');
-        }
-
-        // Prepare $replacement to use in regular expression
-        $preg = preg_quote($replacement, '/');
-
-        // Replace multiple spaces between characters
-        $string = (string)preg_replace('/[\s.]+/', $replacement, $string);
-
-        $legal_cars = str_replace($replacement, '', '_-.');
-        $legal_cars = preg_quote($legal_cars);
-
-        // Remove all illegal characters
-        $string = (string)preg_replace('/[^0-9a-zA-Z' . $legal_cars . $preg . ']/', '', $string);
-
-        // Replace all non-alphabetic characters with replacement
-        $string = (string)preg_replace('/[' . $legal_cars . ']/', $replacement, $string);
-
-        // Inserts a replacement before all words starting with uppercase characters
-        $string = (string)preg_replace('/(.)([A-Z][a-z]+)/', '$1' . $replacement . '$2', $string);
-
-        // Insert a replacement between digit and uppercase characters
-        $string = (string)preg_replace('/([a-z\d])([A-Z])/', '$1' . $replacement . '$2', $string);
-
-        // Replace multiple replacement
-        $string = (string)preg_replace('/[' . $preg . ']+([A-Z0-9])/', $replacement . '$1', $string);
-
-        // Return without replacement at the beginning and end of the line
-        return trim($string, $replacement);
-    }
-}
\ No newline at end of file