RemoveKey
status_t RemoveKey(const BKey& key);
status_t RemoveKey(const char* keyring, const BKey& key);
result = keyStore.RemoveKey(kHaikuDepotKeyring, key);
result = keyStore.RemoveKey(keyring, password);
return RemoveKey(NULL, key);
result = keyring->RemoveKey(identifier, keyMessage);
result = fMasterKeyring->RemoveKey(kKeyringKeysIdentifier,
status_t RemoveKey(const BString& identifier,