remove deprecated "--do-not-cross-mountpoints"

use --one-file-system instead

borg/archiver.py

@@ -752,8 +752,6 @@ class Archiver:
             ('--weekly', '--keep-weekly', 'Warning: "--weekly" has been deprecated. Use "--keep-weekly" instead.'),
             ('--monthly', '--keep-monthly', 'Warning: "--monthly" has been deprecated. Use "--keep-monthly" instead.'),
             ('--yearly', '--keep-yearly', 'Warning: "--yearly" has been deprecated. Use "--keep-yearly" instead.'),
-            ('--do-not-cross-mountpoints', '--one-file-system',
-             'Warning:  "--do-no-cross-mountpoints" has been deprecated. Use "--one-file-system" instead.'),
         ]
         for i, arg in enumerate(args[:]):
             for old_name, new_name, warning in deprecations: