HID: hid-steam: Avoid overwriting smoothing parameter

The original implementation of this driver incorrectly guessed the function of
this register. It's not only unnecessary to write to this register for lizard
mode but actually counter-productive since it overwrites whatever previous
value was intentionally set, for example by Steam.

Signed-off-by: Vicki Pfau <vi@endrift.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>