doc: move evanlucas to TSC Emeritus

I no longer have the time to dedicate to being on the TSC.
I am still planning to contribute when time permits.

PR-URL: https://github.com/nodejs/node/pull/19953


Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>