doc: remove tsc-review

The tsc-review label is ineffective. It almost always gets ignored.
Remove it. When requiring TSC attention, people should @-mention the
TSC GitHub team.

PR-URL: https://github.com/nodejs/node/pull/26506


Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>