power, max8998: Include linux/module.h just once in drivers/power/max8998_charger.c

Remove the duplicate.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/power/max8998_charger.c

@@ -21,7 +21,6 @@
 
 #include <linux/module.h>
 #include <linux/err.h>
-#include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/platform_device.h>
 #include <linux/power_supply.h>