repl: remove deprecated .rli

The .rli property is just a reference to the active REPL instance
and it was deprecated for a long time.

To improve maintainability of the REPL this feature is removed.

Signed-off-by: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: https://github.com/nodejs/node/pull/33286


Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>