internal/provider(test): remove DMS from unusual endpoint tests

[jar-b]

Description

DMS has been migrated to AWS SDK for Go V2, and thus the corresponding DMSConn method to create a V1 client no longer exists. The generic TestAccProvider_endpoints test effectively ignores services which use V2 AWS SDK clients with the following conditional in the test check function (serviceConn will always return a method name ending in Conn):

			methodName := serviceConn(serviceKey)
			method := reflect.ValueOf(providerClient).MethodByName(methodName)
			if !method.IsValid() {
				continue
			}

Because this generic test check ignores V2 clients, the DMS case for the unusual endpoints tests has been removed entirely rather than including new conditional logic which would effectively just skip the case before executing any real checks.

Relations

Relates #37780

Output from Acceptance Testing

% TF_ACC=1 go test -count=1 ./internal/provider/... -run="TestAccProvider_unusualEndpoints"
?       github.com/hashicorp/terraform-provider-aws/internal/provider/fwprovider        [no test files]
ok      github.com/hashicorp/terraform-provider-aws/internal/provider   23.263s

[github-actions]

Community Note

Voting for Prioritization

• Please vote on this pull request by adding a 👍 reaction to the original post to help the community and maintainers prioritize this pull request.
• Please see our prioritization guide for information on how we prioritize.
• Please do not leave "+1" or other comments that do not add relevant new information or questions, they generate extra noise for issue followers and do not help prioritize the request.

For Submitters

• Review the contribution guide relating to the type of change you are making to ensure all of the necessary steps have been taken.
• For new resources and data sources, use skaff to generate scaffolding with comments detailing common expectations.
• Whether or not the branch has been rebased will not impact prioritization, but doing so is always a welcome surprise.

[YakDriver]

LGTM 🎉

[github-actions]

This functionality has been released in v5.62.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

I'm going to lock this pull request because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.
If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.