(mongodb >=1.15.0)
MongoDB\Driver\ClientEncryption::removeKeyAltName — Removes an alternate name from a key document
$keyId, string $keyAltName): ?object
Removes keyAltName from the set of alternate names for
the key document with the given UUID keyId.
keyIdkeyAltName
Returns the previous version of the key document, or null if no document
matched.