remove Object.fromEntries polyfill for node 10 in test utils (#30657)
remove Object.fromEntries polyfill for node 10 in test utils (#30657)

Co-authored-by: kodiakhq[bot] <9e05f530a4a0b74ddd685a36dedab9087faa4174@users.noreply.github.com>
zeit/next.js,azukaru/next.js,JeromeFitz/next.js,azukaru/next.js,JeromeFitz/next.js,JeromeFitz/next.js,JeromeFitz/next.js,azukaru/next.js,zeit/next.js,zeit/next.js,azukaru/next.js