Disassociates an Identity and Access Management (IAM) role from a DB cluster.
See https://paws-r.github.io/docs/neptune/remove_role_from_db_cluster.html for full documentation.
neptune_remove_role_from_db_cluster(
DBClusterIdentifier,
RoleArn,
FeatureName = NULL
)[required] The name of the DB cluster to disassociate the IAM role from.
[required] The Amazon Resource Name (ARN) of the IAM role to disassociate from the
DB cluster, for example
arn:aws:iam::123456789012:role/NeptuneAccessRole.
The name of the feature for the DB cluster that the IAM role is to be
disassociated from. For the list of supported feature names, see
describe_db_engine_versions.