driver: l3gd20h: remove unnecessary test.
driver: l3gd20h: remove unnecessary test.

rotate by identity matrix is fast.

BRANCH=none
BUG=none
TEST=compile

Change-Id: Ia9fccb81ebc4c0be7c9d80823b3c2f76aa2275d0
Signed-off-by: Gwendal Grignou <190c5a5edfcf62e0246559bf31fa7548674de3ad@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/373723
Reviewed-by: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec