clearfog: remove unused config key

Fixes: c58975040004ef3f38f4bd024a43346fdfa33e45
Change-Id: Ia39a2f6bc825becccbd3c7dee37dd6c47681382d
diff --git a/configs/czechlight_clearfog_defconfig b/configs/czechlight_clearfog_defconfig
index 97f6117..3859db2 100644
--- a/configs/czechlight_clearfog_defconfig
+++ b/configs/czechlight_clearfog_defconfig
@@ -96,7 +96,6 @@
 CZECHLIGHT_CFG_FS_PERSIST_SYSREPO=y
 CZECHLIGHT_CFG_FS_PERSIST_KEYS=y
 BR2_PACKAGE_CZECHLIGHT_CLEARFOG_LEDS=y
-CZECHLIGHT_CLEARFOG_LEDS_BOOT=y
 CZECHLIGHT_RAUC_ROOTFS=y
 CZECHLIGHT_RAUC_COMPATIBLE="czechlight-clearfog"
 CZECHLIGHT_RAUC_SLOT_A_ROOTFS_DEV="/dev/mmcblk0p1"