regulator: s2mpa01: Remove unused define for S2MPA01_REGULATOR_CNT

The S2MPA01_REGULATOR_CNT is no longer used after converted to use
simplified DT parsing.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
1 file changed