errors: remove dead code in ERR_INVALID_ARG_TYPE

Remove unreachable code. As expected is converted to an Array the
'not ' check will be never executed.

PR-URL: https://github.com/nodejs/node/pull/31322


Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>