Remove swapfile and add to ignore to prevent further issues

[art-of-dom]

Summary

This is a very small change to remove the accidently added .Makefile.swp. These files are generated while actively editing in vi/vim. Also updated the ignore to prevent other swapfiles being added by accident.

Changes

• Remove the unneeded swapfile
• Add it to gitignore so vi/vim users don't accidently add it to commits by mistake in the future

Checklist for Reviewers

• Title and description should be descriptive (Not just a serial number for example).
• profileIDs should not be vendorID and should be a unique value for every profile.
• All devices should be listed in the vendor's index.yaml file.
• Firmware versions can not be changed.
• At least 1 image per device and should be transparent.

Notes for Reviewers

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Release Notes

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[CLAassistant]

All committers have signed the CLA.