hwmon: Remove Jean Delvare from maintainers

hwmon: Remove Jean Delvare from maintainers

I haven't been active in maintaining the hwmon subsystem in the last
decade, so I think it's about time to admit that I do not have the
time for this duty and update the MAINTAINERS file to reflect that.

I would like to thank Guenter Roeck for taking over and doing an
excellent work for so many years.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Link: https://lore.kernel.org/r/20250827111344.0debba2a@endymion
Signed-off-by: Guenter Roeck <linux@roeck-us.net>