tools: remove `--quiet` from run-valgrind.py

This should no longer be an issue, now that we clean up
resources when exiting.

PR-URL: https://github.com/nodejs/node/pull/19377
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>

tools/run-valgrind.py

@@ -37,9 +37,6 @@ VALGRIND_ARGUMENTS = [
   'valgrind',
   '--error-exitcode=1',
   '--smc-check=all',
-  # Node.js does not clean up on exit so don't complain about
-  # memory leaks but do complain about invalid memory access.
-  '--quiet',
 ]
 
 if len(sys.argv) < 2: