(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.
keyIdA MongoDB\BSON\Binary instance with subtype 4 (UUID) identifying the key document.
keyAltNameAlternate name to remove from the key document.
Returns the previous version of the key document, or null if no document
matched.