repl: fix coloring of `process.versions`

Remove the custom formatter that was added in commit 4fb27d43 ("intl: Add
more versions from ICU").  It's not necessary anymore (and may not have
been necessary at all) and prevents proper coloring in the REPL.

PR-URL: https://github.com/nodejs/node/pull/17861
Fixes: https://github.com/nodejs/node/issues/17086


Reviewed-By: Nikolai Vavilov <vvnicholas@gmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Khaidi Chu <i@2333.moe>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>