power: supply: bd99954: remove unused struct 'battery_data'

'battery_data' is unused since the original
commit 0902f83 ("power: supply: Support ROHM bd99954 charger").

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Acked-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/20240528000634.196707-2-linux@treblig.org
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

Author: Dr. David Alan Gilbert

drivers/power/supply/bd99954-charger.c

@@ -70,13 +70,6 @@
 
 #include "bd99954-charger.h"
 
-struct battery_data {
-	u16 precharge_current;	/* Trickle-charge Current */
-	u16 fc_reg_voltage;	/* Fast Charging Regulation Voltage */
-	u16 voltage_min;
-	u16 voltage_max;
-};
-
 /* Initial field values, converted to initial register values */
 struct bd9995x_init_data {
 	u16 vsysreg_set;	/* VSYS Regulation Setting */