Entity/CustomFieldsGroup.php
public function removeCustomField(\Chill\CustomFieldsBundle\Entity\CustomField $customField)
    {
        $this->customFields->removeElement($customField);
    }
public function removeCustomField(\Chill\CustomFieldsBundle\Entity\CustomField $customField)
    {
        $this->customFields->removeElement($customField);
    }
Remove customField

@param \Chill\CustomFieldsBundle\Entity\CustomField $customField