soc/intel/xeon_sp/spr/Kconfig: Remove unused MAX_MC_CHN

Change-Id: Ia4011a0f29d360fbe46a5e052e2acb3d23d8ceaf
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76695
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/intel/xeon_sp/spr/Kconfig b/src/soc/intel/xeon_sp/spr/Kconfig
index ed95457..c3710ac 100644
--- a/src/soc/intel/xeon_sp/spr/Kconfig
+++ b/src/soc/intel/xeon_sp/spr/Kconfig
@@ -127,10 +127,6 @@
 	int
 	default 4
 
-config MAX_MC_CHN
-	int
-	default 2
-
 config DIMM_MAX
 	int
 	default 32