Update ConsumerIrService to match revised IR HAL

Length parameter is being removed from the transmit() function, so
remove it from the call to transmit() here.

Test: Built and confirmed service runs on boot.
Change-Id: Ie8011f4cb22020ae9ed30e90b8568ed35d38d0d2
Signed-off-by: Connor O'Brien <connoro@google.com>