Traits/Document/Taggeable.php
public function removeTag($item)
    {
        if (($key = array_search($item, $this->tags)) !== false) {
            unset($this->tags[$key]);
        }

        return $this;
    }
public function removeTag($item)
    {
        if (($key = array_search($item, $this->tags)) !== false) {
            unset($this->tags[$key]);
        }

        return $this;
    }
Remove tag

@return collection $tags

@return self