Removes exifreader Dependency

[ericnograles]

Summary

• See https://aws.amazon.com/blogs/machine-learning/how-an-important-change-in-web-standards-impacts-your-image-annotation-jobs/
• Browsers now rotate images based on exif by default

Notes

• This now makes this library tiny -- ExifReader added a bit of heft that I was not a fan of. We are back down to 7kb uncompressed!