no-unescaped-regexp-dot ESLint custom rule contains feature detection
that is not needed on master or the v6.x-staging branch. The rule does
not exist in the v4.x-staging branch. Remove the unnecessary complexity.
PR-URL: https://github.com/nodejs/node/pull/14561
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>