mb/system76: acpi: Remove unused EC define

The define for color keyboard setting has never been used, as it was
added as a Kconfig selection when ec/system76/ec was introduced.

Change-Id: Ib83d4510c14ddf083660e42175ab093403792cac
Signed-off-by: Tim Crawford <tcrawford@system76.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51944
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
diff --git a/src/mainboard/system76/lemp9/acpi/mainboard.asl b/src/mainboard/system76/lemp9/acpi/mainboard.asl
index dfa81d3..416cc5a 100644
--- a/src/mainboard/system76/lemp9/acpi/mainboard.asl
+++ b/src/mainboard/system76/lemp9/acpi/mainboard.asl
@@ -2,7 +2,6 @@
 
 #define EC_GPE_SCI 0x50 /* GPP_E16 */
 #define EC_GPE_SWI 0x29 /* GPP_D9 */
-#define EC_COLOR_KEYBOARD 0
 #include <ec/system76/ec/acpi/ec.asl>
 
 Scope (\_SB) {
diff --git a/src/mainboard/system76/oryp5/acpi/mainboard.asl b/src/mainboard/system76/oryp5/acpi/mainboard.asl
index a319ae6..4373b2a 100644
--- a/src/mainboard/system76/oryp5/acpi/mainboard.asl
+++ b/src/mainboard/system76/oryp5/acpi/mainboard.asl
@@ -2,7 +2,6 @@
 
 #define EC_GPE_SCI 0x17 /* GPP_B23 */
 #define EC_GPE_SWI 0x26 /* GPP_G6 */
-#define EC_COLOR_KEYBOARD 1
 #include <ec/system76/ec/acpi/ec.asl>
 
 Scope (\_SB)