Input: elants_i2c - delete some dead code

We shuffled the error handling around so this condition is dead code
now.  The "error" variable is always zero.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Link: https://lore.kernel.org/r/Y33BD9xkRC9euIdO@kili


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>