I'm removing the argument entirely here, but we might want to change
this to passing null or and empty array instead, if the impact of
dropping it entirely turns out to be too large.
This was deprecated as part of https://wiki.php.net/rfc/deprecations_php_7_2
as a doc-only deprecation.
run-tests.php enforces error_reporting=E_ALL (including E_STRICT),
setting this explicitly in not necessary. Conversely, after the
removal of some E_STRICT errors, explicitly excluding it is no
longer necessary in some places.
