drivers/intel/fsp1_1: Drop weak function definition

The only FSP 1.1 platform is Braswell, which has a non-weak definition
for the `soc_silicon_init_params` function. This changes the resulting
BUILD_TIMELESS=1 coreboot image for Facebook fbg1701, for some reason.

Change-Id: I2a1b51cda9eb21d7af8372c16a43195a4bdd9543
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54956
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

src/drivers/intel/fsp1_1/ramstage.c

@@ -172,8 +172,3 @@ __weak void mainboard_silicon_init_params(
 	SILICON_INIT_UPD *params)
 {
 }
-
-/* Initialize the UPD parameters for SiliconInit */
-__weak void soc_silicon_init_params(SILICON_INIT_UPD *params)
-{
-}