Get rid of compatibility check in create / update consumer

jserrors.go

@@ -98,9 +98,6 @@ var (
 	// ErrCantAckIfConsumerAckNone is returned when attempting to ack a message for consumer with AckNone policy set.
 	ErrCantAckIfConsumerAckNone JetStreamError = &jsError{message: "cannot acknowledge a message for a consumer with AckNone policy"}
 
-	// ErrRequireServerVersion is returned when using a feature which requires a higher server version.
-	ErrRequireServerVersion JetStreamError = &jsError{message: "invalid server version"}
-
 	// DEPRECATED: ErrInvalidDurableName is no longer returned and will be removed in future releases.
 	// Use ErrInvalidConsumerName instead.
 	ErrInvalidDurableName = errors.New("nats: invalid durable name")

jsm.go

@@ -262,9 +262,6 @@ func (js *js) AddConsumer(stream string, cfg *ConsumerConfig, opts ...JSOpt) (*C
 	if cfg == nil {
 		cfg = &ConsumerConfig{}
 	}
-	if cfg.Name != _EMPTY_ && !js.nc.serverMinVersion(2, 9, 0) {
-		return nil, fmt.Errorf("%w: %s", ErrRequireServerVersion, "consumer name requires at least server version 2.9.0")
-	}
 	consumerName := cfg.Name
 	if consumerName == _EMPTY_ {
 		consumerName = cfg.Durable
@@ -290,9 +287,6 @@ func (js *js) UpdateConsumer(stream string, cfg *ConsumerConfig, opts ...JSOpt)
 	if cfg == nil {
 		return nil, ErrConsumerConfigRequired
 	}
-	if cfg.Name != _EMPTY_ && !js.nc.serverMinVersion(2, 9, 0) {
-		return nil, fmt.Errorf("%w: %s", ErrRequireServerVersion, "consumer name requires at least server version 2.9.0")
-	}
 	consumerName := cfg.Name
 	if consumerName == _EMPTY_ {
 		consumerName = cfg.Durable