mb/ibm/sbp1/Kconfig: Remove unused MAX_SOCKET_UPD

Change-Id: I5d9133f2255a96c8367f69dcbb198a1a142cdb82
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76696
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
diff --git a/src/mainboard/ibm/sbp1/Kconfig b/src/mainboard/ibm/sbp1/Kconfig
index 150c71c..8d8b62e 100644
--- a/src/mainboard/ibm/sbp1/Kconfig
+++ b/src/mainboard/ibm/sbp1/Kconfig
@@ -27,10 +27,6 @@
 	int
 	default 4
 
-config MAX_SOCKET_UPD
-	int
-	default 4
-
 config MAX_CPUS
 	int
 	default 480