sb/intel/ibexpeak: Drop useless bd82x6x pcie.c

The PCIe device IDs for Ibexpeak are not in bd82x6x's pcie.c driver.
Thus, the code has always been dead code on Ibexpeak. Drop it.

Change-Id: Ide2b4af2a187ecf98f39a9c979646a7ed959c74f
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51067
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/southbridge/intel/ibexpeak/Makefile.inc

@@ -9,7 +9,6 @@ ramstage-y += azalia.c
 ramstage-y += fadt.c
 ramstage-y += lpc.c
 ramstage-y += ../bd82x6x/pci.c
-ramstage-y += ../bd82x6x/pcie.c
 ramstage-y += sata.c
 ramstage-y += usb_ehci.c
 ramstage-y += me.c