hwmon: (lm75) remove now-unused include

Including hwmon-sysfs.h is not needed since sysfs code got removed from
this file in commit 08b02433 ("hwmon: (lm75) Convert to use new hwmon
registration API").

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://lore.kernel.org/r/20231228-hwmon-cleanup-include-v1-1-e36f65aee1f0@bootlin.com


Signed-off-by: Guenter Roeck <linux@roeck-us.net>