Zako: Remove unnecessary ASL code for KB/MS

BRANCH=firmware-zako-5219.B
BUG=None
TEST=confirm build pass and the corresponding ASL code is not
including.
Signed-off-by: Kenji Chen <kenji.chen@intel.com>
Change-Id: I58c2fd15f2980b862da59e1826ecbd81006ba95a
Reviewed-on: https://chromium-review.googlesource.com/229571
Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
diff --git a/src/mainboard/google/zako/acpi/superio.asl b/src/mainboard/google/zako/acpi/superio.asl
index e1c9d1c..c26140a 100644
--- a/src/mainboard/google/zako/acpi/superio.asl
+++ b/src/mainboard/google/zako/acpi/superio.asl
@@ -22,8 +22,8 @@
 #undef SIO_ENABLE_FDC0           // pnp 2e.0: Disable Floppy Controller
 #undef SIO_ENABLE_INFR           // pnp 2e.a: Disable Consumer IR
 
-#define SIO_ENABLE_PS2K          // pnp 2e.5: Enable PS/2 Keyboard
-#define SIO_ENABLE_PS2M          // pnp 2e.6: Enable PS/2 Mouse
+#undef SIO_ENABLE_PS2K          // pnp 2e.5: Enable PS/2 Keyboard
+#undef SIO_ENABLE_PS2M          // pnp 2e.6: Enable PS/2 Mouse
 #define SIO_ENABLE_COM1          // pnp 2e.1: Enable Serial Port 1
 #define SIO_ENABLE_ENVC          // pnp 2e.4: Enable Environmental Controller
 #define SIO_ENVC_IO0      0x700  // pnp 2e.4: io 0x60