Revert "re #186: Add UserAbstract::hasRole and UserAbstract::hasRoles"

This reverts commit 9f94a67.

code/libraries/koowa/libraries/user/abstract.php

@@ -126,30 +126,6 @@ public function getRoles()
         return KObjectConfig::unbox($this->getData()->roles);
     }
 
-    /**
-     * Checks if the user has a role.
-     *
-     * @param  mixed|array $roles A role name or an array containing role identifiers.
-     * @return bool True if the user has at least one of the provided roles, false otherwise.
-     */
-    public function hasRole($roles)
-    {
-        $roles = (array) $roles;
-        return (bool) array_intersect($this->getRoles(), $roles);
-    }
-
-    /**
-     * Checks if the user has a set of roles.
-     *
-     * @param  array $roles An array containing role identifiers.
-     * @return bool True if the user has all of the provided roles, false otherwise.
-     */
-    public function hasRoles($roles)
-    {
-        $roles = (array) $roles;
-        return count(array_intersect(array_unique($this->getRoles()), $roles)) === count($roles);
-    }
-
     /**
      * Returns the groups the user is part of
      *