gdb: remove unused argument

Author: franciscozdo

sys/debug/nvirtmem.py

@@ -55,8 +55,6 @@ def __call__(self, args):
             description='Launch kernel in a board simulator.')
         parser.add_argument('-p', '--pid', type=int, default='-1',
                             help='Pid of proc to display semgent.')
-        parser.add_argument('-s', '--segment', type=int, default='-1',
-                            help='Number of segment to display.')
         args = parser.parse_args(args=args.split())
 
         if args.pid == -1: