board: ls2080ardb: use default scan_dev_for_boot

Default environment variable is more complete. Also scans for efi
binaries for example.

Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de>
Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
diff --git a/include/configs/ls2080ardb.h b/include/configs/ls2080ardb.h
index d3d7595..7308d72 100644
--- a/include/configs/ls2080ardb.h
+++ b/include/configs/ls2080ardb.h
@@ -429,12 +429,6 @@
 				"run scan_dev_for_boot; "	\
 			"fi; "					\
 		"done\0"					\
-	"scan_dev_for_boot="					\
-		"echo Scanning ${devtype} "			\
-			"${devnum}:${distro_bootpart}...; "	\
-		"for prefix in ${boot_prefixes}; do "		\
-			"run scan_dev_for_scripts; "		\
-		"done;\0"					\
 	"boot_a_script="					\
 		"load ${devtype} ${devnum}:${distro_bootpart} "	\
 			"${scriptaddr} ${prefix}${script}; "	\
@@ -498,12 +492,6 @@
 				"run scan_dev_for_boot; "	\
 			"fi; "					\
 		"done\0"					\
-	"scan_dev_for_boot="					\
-		"echo Scanning ${devtype} "			\
-			"${devnum}:${distro_bootpart}...; "	\
-		"for prefix in ${boot_prefixes}; do "		\
-			"run scan_dev_for_scripts; "		\
-		"done;\0"					\
 	"boot_a_script="					\
 		"load ${devtype} ${devnum}:${distro_bootpart} "	\
 			"${scriptaddr} ${prefix}${script}; "	\