mfd: lp87565: Remove unused define 'LP87565_NUM_BUCK'

This define appears incorrect, but it is completely unused so it can be
removed.
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

include/linux/mfd/lp87565.h

@@ -237,9 +237,6 @@ enum lp87565_device_type {
 #define LP87565_GOIO2_OUT			BIT(1)
 #define LP87565_GOIO1_OUT			BIT(0)
 
-/* Number of step-down converters available */
-#define LP87565_NUM_BUCK		6
-
 enum LP87565_regulator_id {
 	/* BUCK's */
 	LP87565_BUCK_0,