nobody using the 'new_runtests' script, so remove for now
nobody using the 'new_runtests' script, so remove for now

If we ever want it, we can pull back/remerge back into runtests,
but keeping two versions (especially where the "new" version
is the unused one) seems like a bad idea.

Reviewed-By: Gabor Gombas <3bb8c49439d9d044594e1c6967f991d0b4248a64@morganstanley.com>

stdweird/aquilon,guillaume-philippon/aquilon,quattor/aquilon,quattor/aquilon,guillaume-philippon/aquilon,quattor/aquilon,stdweird/aquilon,stdweird/aquilon,guillaume-philippon/aquilon