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>

drivers/regulator/s2mpa01.c

@@ -17,8 +17,6 @@
 #include <linux/mfd/samsung/core.h>
 #include <linux/mfd/samsung/s2mpa01.h>
 
-#define S2MPA01_REGULATOR_CNT ARRAY_SIZE(regulators)
-
 struct s2mpa01_info {
 	int ramp_delay24;
 	int ramp_delay3;