ACPI: Remove CBMEM TOC from GNVS

This existed for ChromeOS but was no longer used with DYNAMIC_CBMEM.

Change-Id: I558a7ae333e5874670206e20a147dd6598a3a5e7
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/6032
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>

src/mainboard/google/slippy/acpi_tables.c

@@ -72,9 +72,6 @@ static void acpi_create_gnvs(global_nvs_t *gnvs)
 	gnvs->s5u0 = 0;
 	gnvs->s5u1 = 0;
 
-	/* CBMEM TOC */
-	gnvs->cmem = 0;
-
 	/* TPM Present */
 	gnvs->tpmp = 1;