Remove I2C4 since it is a slave device used for USB-C mux control
and should not be included with the other master devices.
BUG=b:160624619 b:160292546
TEST=EC can communicate with AP mux I2C4 slave
Change-Id: Idaad618e90d6264d881dc66628cf581a856c231d
Signed-off-by: Edward Hill <ecgh@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43263
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>