Remove restore directory if it exists

src/freedombone-utils-backup

     if [ -d $USB_MOUNT/backup/${restore_app_name} ]; then
         echo $"Restoring ${restore_app_name} database"
         local_database_dir=/root/temp${restore_app_name}data
+        if [ -d ${local_database_dir} ]; then
+            rm -rf ${local_database_dir}
+        fi
         function_check restore_directory_from_usb
         restore_directory_from_usb "${local_database_dir}" "${restore_app_name}data"
         if [ ! -f /root/temp${restore_app_name}data/${RESTORE_SUBDIR}/temp${restore_app_name}data/${restore_app_name}.sql ]; then