Remove versions from AWS OA DF PE example

[nsmith78660]

Description

Removing the versions from versions.tf for the privatelink example within the aws/oa_df directory. With the current versions it caused the following error:

╷
│ Error: Unsupported argument
│ 
│   on atlas-privatelink.tf line 12, in resource "mongodbatlas_privatelink_endpoint_service_data_federation_online_archive" "test":
│   12:   region                     = "US_EAST_1"
│ 
│ An argument named "region" is not expected here.
╵
╷
│ Error: Unsupported argument
│ 
│   on atlas-privatelink.tf line 13, in resource "mongodbatlas_privatelink_endpoint_service_data_federation_online_archive" "test":
│   13:   customer_endpoint_dns_name = aws_vpc_endpoint.vpce_east.dns_entry[0].dns_name
│ 
│ An argument named "customer_endpoint_dns_name" is not expected here.

Link to any related issue(s):

Type of change:

• Bug fix (non-breaking change which fixes an issue). Please, add the "bug" label to the PR.
• New feature (non-breaking change which adds functionality). Please, add the "enhancement" label to the PR. A migration guide must be created or updated if the new feature will go in a major version.
• Breaking change (fix or feature that would cause existing functionality to not work as expected). Please, add the "breaking change" label to the PR. A migration guide must be created or updated.
• This change requires a documentation update
• Documentation fix/enhancement

Required Checklist:

• I have signed the MongoDB CLA
• I have read the contributing guides
• I have checked that this change does not generate any credentials and that they are NOT accidentally logged anywhere.
• I have added tests that prove my fix is effective or that my feature works per HashiCorp requirements
• I have added any necessary documentation (if appropriate)
• I have run make fmt and formatted my code
• If changes include deprecations or removals I have added appropriate changelog entries.
• If changes include removal or addition of 3rd party GitHub actions, I updated our internal document. Reach out to the APIx Integration slack channel to get access to the internal document.

Further comments

[EspenAlbert]

Merged in #2614 thank you @nsmith78660