counter: 104-quad-8: Remove pointless comment

It is obvious that devm_counter_register() is used to register a Counter
device, so a comment stating such is pointless here.

Acked-by: Syed Nayyar Waris <syednwaris@gmail.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Link: https://lore.kernel.org/r/77e9f3daa091d0ad0ee56b8973705dd03db85dd4.1623201081.git.vilhelm.gray@gmail.com


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>