ARM: tegra: p2571: remove another unused define

CONFIG_MAX77620_POWER isn't used anywhere. Don't define it in p2571.h.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Signed-off-by: NTom Warren <twarren@nvidia.com>

include/configs/p2571.h

@@ -10,9 +10,6 @@
 
 #include <linux/sizes.h>
 
-/* enable PMIC */
-#define CONFIG_MAX77620_POWER
-
 #include "tegra210-common.h"
 
 /* High-level configuration options */