Remove TypeScript config and build info files from npm

[ypconstante]

🐛 Bug Report

Currently, the tsconfig.json and tsconfig.tsbuildinfo files are being distributed in some (maybe all) jest packages in npm. If my bash command isn't wrong, this files are summing up to 6.5M after installing jest. Since this files aren't used when running jest, they can be removed without side effects.

To Reproduce

Steps to reproduce the behavior:

• Install jest

• Run the command in bash to show all config and build info files:

find . -type f -name "*tsconfig*" -path "*jest*" -print0 | xargs -r0 du -csh 

Expected behavior

No unnecessary TypeScript files when downloading jest packages.

Run npx envinfo --preset jest

Paste the results here:

  System:
    OS: Linux 4.15 Linux Mint 19.1 (Tessa)
    CPU: (4) x64 Intel(R) Core(TM) i5-3470S CPU @ 2.90GHz
  Binaries:
    Node: 10.15.3 - ~/.local/lib/asdf/installs/nodejs/10.15.3/bin/node
    Yarn: 1.16.0 - /usr/bin/yarn
    npm: 6.4.1 - ~/.local/lib/asdf/installs/nodejs/10.15.3/bin/npm
  npmPackages:
    jest: 24.8.0 => 24.8.0 

[thymikee]

PR welcome!

[github-actions]

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