[AWS::EFS::AccessPoint] - [BUG] - ClientToken without apparent purpose in CloudFormation context

### Name of the resource

AWS::EFS::AccessPoint

### Resource Name

AWS::EFS::AccessPoint

### Issue Description

The [resource parameters ](https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-resource-efs-accesspoint.html)include ClientToken with the description `The opaque string specified in the request to ensure idempotent creation.`

I think this does not make sense in the CloudFormation context and is just a copied over remnant from the [CreateAccessPoint API](https://docs.aws.amazon.com/efs/latest/ug/API_CreateAccessPoint.html). For the API it makes sense to be idempotent, but not for the deployment model of Cloudformation.
If it serves no purpose, it should be removed.

### Expected Behavior

ClientToken having a purpose or not be a parameter.

### Observed Behavior

ClientToken being a parameter without apparent purpose.

### Test Cases

documented resource parameters

### Other Details

_No response_

Read the AWS::EFS::AccessPoint resource parameter documentation and the linked CreateAccessPoint API documentation, focusing on ClientToken. Determine whether CloudFormation uses this parameter for a distinct purpose; done means either documenting that purpose or removing ClientToken from the resource parameters.

Written by the indexing model from the issue text.