Remove test and story pattern from files array in package.json

[brandongregoryscott]

Overview

Resolves #1595

➜  evergreen git:(fix-package-distribution-size) yarn pack --dry-run
yarn pack v1.22.17
success Wrote tarball to "/Users/Brandon/oss/fork/evergreen/evergreen-ui-v7.0.0.tgz".
✨  Done in 1.68s.
➜  evergreen git:(fix-package-distribution-size) ✗ ls -l evergreen-ui-v7.0.0.tgz
-rw-r--r--  1 Brandon  staff  1343958 Jan 17 20:47 evergreen-ui-v7.0.0.tgz

Screenshots (if applicable)

Documentation

• [ ] Updated Typescript types and/or component PropTypes
• [ ] Added / modified component docs
• [ ] Added / modified Storybook stories

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