Handle inst.rdp in Dracut

Looks like we enable network already in dracut if inst.vnc is used,
lets switch the code to work with inst.rdp.

Also drop the VNC related commands, as they are no longer
expected to be used.

Resolves: RHEL-41219

pyanaconda/argument_parsing.py

@@ -498,15 +498,6 @@ def __call__(self, parser, namespace, values, option_string=None):
     # Display
     ap.add_argument("--resolution", dest="runres", default=None, metavar="WIDTHxHEIGHT",
                     help=help_parser.help_text("resolution"))
-    ap.add_argument("--usefbx", dest="xdriver", action="store_const", const="fbdev",
-                    help=help_parser.help_text("usefbx"))
-    ap.add_argument("--vnc", action="store_true", default=False,
-                    help=help_parser.help_text("vnc"))
-    ap.add_argument("--vncconnect", metavar="HOST:PORT", help=help_parser.help_text("vncconnect"))
-    ap.add_argument("--vncpassword", default="", metavar="PASSWORD",
-                    help=help_parser.help_text("vncpassword"))
-    ap.add_argument("--xdriver", dest="xdriver", action="store", type=str,
-                    default=None, metavar="DRIVER", help=help_parser.help_text("xdriver"))
     ap.add_argument("--xtimeout", dest="xtimeout", action="store", type=int, default=X_TIMEOUT,
                     metavar="TIMEOUT_IN_SECONDS", help=help_parser.help_text("xtimeout"))
     ap.add_argument("--rdp", action="store_true", default=False, dest="rdp_enabled",