Delete cached certificate from keychain.
iOS client will always try the cached certificate first if it is available before requesting the certificate from afaria server or loading the certificate from file system. In case the cached certificate is no longer valid, use this method to delete it from keychain Only supported by iOS platform
<static> deleteCertificateFromStore( successCB, [errorCB], certificateKey )
| Name | Type | Argument | Description |
| successCB | anonymous.sendRequestSuccessCB | Callback method upon success. | |
| errorCB | anonymous.sendRequestErrorCB | (optional) | Callback method upon failure. |
| certificateKey | string | The key of the certificate to be deleted. |