nb/i945: Fix gate graphics hardware for frequency change

The GCFC (Graphics Clock Frequency Control) read is not used at
the line below.
As the default value is zero, let's remove unused read.

Found-by: scan-build 7.0.1-8
Change-Id: I82c567e3a5b0c0c4a8596ea0cb7693667c71b720
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34329
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

0 files changed, 0 insertions, 0 deletions