fix(codegen): dedupe @aws.protocols#restXml serialization

[syall]

Issue

Issue number, if available, prefixed with "#"

N/A.

Description

What does this implement/fix? Explain your changes.

Codegen for @aws.protocols#restXml serialization was duplicated due to super invocations for payload serialization.

This PR dedupes the serialization by removing the super invocations.

TODO:

• Generate all clients

Testing

How was this change tested?

CI passes.

Identified affected services:

$ cd codegen/sdk-codegen/aws-models/
$ smithy select --selector "[trait|aws.protocols#restXml]" --allow-unknown-traits .
com.amazonaws.cloudfront#Cloudfront2020_05_31
com.amazonaws.route53#AWSDnsV20130401
com.amazonaws.s3#AmazonS3
com.amazonaws.s3control#AWSS3ControlServiceV20180820

Route53 did not end up having any codegen changes, but CloudFront, S3, and S3 Control did.

Additional context

Add any other context about the PR here.

N/A.

Checklist

• If you wrote E2E tests, are they resilient to concurrent I/O?
• If adding new public functions, did you add the @public tag and enable doc generation on the package?

---

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs and link to relevant comments in this thread.