download/u-boot: Remove support for deleting git folders

Removing the git dirs was part of deblobbing, which Libreboot no longer
cares about. The variable that triggers it is no more. Remove the dead
code.

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>

resources/scripts/download/u-boot

@@ -235,11 +235,6 @@ if [ $# -eq 0 ] ; then
 	for board in $(list_supported_boards); do
 		download_uboot_board "${board}"
 	done
-
-	if [ "${deletegit}" = "true" ]; then
-		rm -rf u-boot/u-boot/ u-boot/.git*
-	fi
-
 	exit 0
 elif [ $# -eq 1 -a "$1" == "--help" ] ; then
 	usage
@@ -255,10 +250,6 @@ elif [ $# -eq 1 ] ; then
 		fi
 	done
 
-	if [ "${deletegit}" = "true" ]; then
-		rm -rf u-boot/u-boot/ u-boot/.git*
-	fi
-
 	printf "Error: Board '${1}' is not supported\n"
 
 	exit 1