scripts: eva_ramboot.py: remove unused import

concludes:
commit e7bc8984d9 ("scripts: make eva_ramboot.py offset configurable")

Signed-off-by: Jan-Niklas Burfeind <git@aiyionpri.me>

scripts/flashing/eva_ramboot.py

@@ -3,7 +3,6 @@
 import argparse
 
 from ftplib import FTP
-from sys import argv
 from os import stat
 
 parser = argparse.ArgumentParser(description='Tool to boot AVM EVA ramdisk images.')