diff --git a/src/mainboard/google/brox/variants/lotso/Makefile.mk b/src/mainboard/google/brox/variants/lotso/Makefile.mk
index 849eb1a..4868317 100644
--- a/src/mainboard/google/brox/variants/lotso/Makefile.mk
+++ b/src/mainboard/google/brox/variants/lotso/Makefile.mk
@@ -3,5 +3,4 @@
 bootblock-y += gpio.c
 romstage-y += memory.c
 romstage-y += gpio.c
-ramstage-$(CONFIG_FW_CONFIG) += variant.c
 ramstage-y += gpio.c
diff --git a/src/mainboard/google/brox/variants/lotso/variant.c b/src/mainboard/google/brox/variants/lotso/variant.c
deleted file mode 100644
index 72b7cbe..0000000
--- a/src/mainboard/google/brox/variants/lotso/variant.c
+++ /dev/null
@@ -1,20 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-#include <assert.h>
-#include <baseboard/variants.h>
-#include <chip.h>
-#include <fw_config.h>
-#include <sar.h>
-
-void variant_update_soc_chip_config(struct soc_intel_alderlake_config *config)
-{
-	if (fw_config_probe(FW_CONFIG(WIFI_BT, WIFI_CNVI_WIFI6E))) {
-		printk(BIOS_INFO, "CNVi bluetooth enabled by fw_config\n");
-		config->cnvi_bt_core = true;
-	}
-}
-
-const char *get_wifi_sar_cbfs_filename(void)
-{
-	return get_wifi_sar_fw_config_filename(FW_CONFIG_FIELD(WIFI_BT));
-}