Model/Api.php
public function deleteAclItem($aclId, $aclItemId)
    {
        $url = $this->_getApiServiceUri(). 'acl/'. $aclId . '/entry/' . $aclItemId;
        $result = $this->_fetch($url, \Zend_Http_Client::DELETE);

        return $result;
    }
public function deleteAclItem($aclId, $aclItemId)
    {
        $url = $this->_getApiServiceUri(). 'acl/'. $aclId . '/entry/' . $aclItemId;
        $result = $this->_fetch($url, \Zend_Http_Client::DELETE);

        return $result;
    }
Delete single ACL entry from specific ACL

@param $aclId
@param $aclItemId
@return bool|mixed
@throws LocalizedException