Remove unused code and dependencies in uploads

[gmrabian]

Description

• Remove all unreferenced dependencies
• Upgrade serverless-s3-local to latest, removing old aws-sdk 2 sub-dependency
• Remove unused api, scan, and test.json files

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How to test

• Virus scan works in deployed env: https://d3g5rqdomzar9t.cloudfront.net/
• Template downloads still work in the deployed env
• No new lambda errors in upload lambdas
  • I tested with our templates and with empty test files. All came back clean, no errors
    • You can check the uploads-clean-uploads-attachments-* bucket in AWS to verify the files are tagged clean
    • You can check the uploads-clean-uploads-avscan lambda logs to verify everything works
• Local run works

[codeclimate]

Code Climate has analyzed commit 1004e7f and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (90% is the threshold).

This pull request will bring the total coverage in the repository to 95.9% (0.0% change).

View more on Code Climate.

[karla-vm]

love a good cleanup!