Remove method getMailboxHash()

app/Helper/MailHelper.php

@@ -12,25 +12,6 @@ use Kanboard\Core\Base;
  */
 class MailHelper extends Base
 {
-    /**
-     * Get the mailbox hash from an email address
-     *
-     * @access public
-     * @param  string  $email
-     * @return string
-     */
-    public function getMailboxHash($email)
-    {
-        if (! strpos($email, '@') || ! strpos($email, '+')) {
-            return '';
-        }
-
-        list($localPart, ) = explode('@', $email);
-        list(, $identifier) = explode('+', $localPart);
-
-        return $identifier;
-    }
-
     /**
      * Filter mail subject
      *

tests/units/Helper/MailHelperTest.php

@@ -6,14 +6,6 @@ use Kanboard\Helper\MailHelper;
 
 class MailHelperTest extends Base
 {
-    public function testMailboxHash()
-    {
-        $helper = new MailHelper($this->container);
-        $this->assertEquals('test1', $helper->getMailboxHash('a+test1@localhost'));
-        $this->assertEquals('', $helper->getMailboxHash('test1@localhost'));
-        $this->assertEquals('', $helper->getMailboxHash('test1'));
-    }
-
     public function testFilterSubject()
     {
         $helper = new MailHelper($this->container);