Cleanup and Ignore AWS SAM Build Artifacts

[CoreyLivingston]

Cleanup and Ignore AWS SAM Build Artifacts

Instructions

• Do not erase any parts of this template that are not applicable to your pull request.
• If a section is not applicable, explicitly state the reason.
• • Tick the checkboxes for the items you have completed.
• These are mandatory requirements, not mere suggestions.

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Describe your changes

• Concise description of the PR

AWS SAM best practices recommend not committing build artifacts to the repository. This commit removes the build.toml file from the AWS Operations Agent sample and adds .aws-sam directories to the .gitignore file to prevent future commits of these artifacts.

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Issue ticket number and link

• Issue # (if applicable) N/A

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All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Are you uploading a dataset?
• Have you added contributions to RELEASE NOTES?

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New Example Submissions:

• Have you tested your code, and made sure the functionality runs successfully? Provide screenshots.
• Have you linted your Python code with black?
• Have you documented Introduction, Architecture Diagram, Prerequisites, Usage, Sample Prompts, and Clean Up steps in your example README?
• I agree to resolve any issues created for this example in the future.

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• Add your name to CONTRIBUTORS.md :D