mainboard/supermicro: x11ssh-tf: drop leftovers of SUART3/4

SUART3/4 are unused on this board (verified by checking registers on
vendor BMC firmware). Thus drop the remaining settings.

Change-Id: I2ababd92fcd7016c508aa3119e798f75eeb90a1c
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38817
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/supermicro/x11-lga1151-series/variants/x11ssh-tf/overridetree.cb b/src/mainboard/supermicro/x11-lga1151-series/variants/x11ssh-tf/overridetree.cb
index 3d46fe0..f481c77 100644
--- a/src/mainboard/supermicro/x11-lga1151-series/variants/x11ssh-tf/overridetree.cb
+++ b/src/mainboard/supermicro/x11-lga1151-series/variants/x11ssh-tf/overridetree.cb
@@ -114,14 +114,8 @@
 						end
 						device pnp 2e.5 off end	# KBC
 						device pnp 2e.7 on end	# GPIO
-						device pnp 2e.b off	# SUART3
-							io 0x60 = 0x3e8
-							irq 0x70 = 4
-						end
-						device pnp 2e.c off	# SUART4
-							io 0x60 = 0x2e8
-							irq 0x70 = 3
-						end
+						device pnp 2e.b off end	# SUART3
+						device pnp 2e.c off end	# SUART4
 						device pnp 2e.d on end	# iLPC2AHB
 						device pnp 2e.e on	# Mailbox
 							io 0x60 = 0xa40