regulator (max5970): Remove duplicate line

Remove redundant/duplicate line.

Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
Link: https://lore.kernel.org/r/20231027152830.1269895-2-naresh.solanki@9elements.com


Signed-off-by: Mark Brown <broonie@kernel.org>