Revokes ingress from a DBSecurityGroup for previously authorized IP ranges or EC2 or VPC Security Groups. Required parameters for this API are one of CIDRIP, EC2SecurityGroupId for VPC, or (EC2SecurityGroupOwnerId and either EC2SecurityGroupName or EC2SecurityGroupId).
/// Specified CIDRIP or EC2 security group is not authorized for the specified DB security
/// group.
///
///
///
/// RDS may not also be authorized via IAM to perform necessary actions on your behalf.
///
///
///
DBSecurityGroupName does not refer to an existing DB security group.
///
/// The state of the DB security group does not allow deletion.
///