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

data/systemd/anaconda-direct.service

@@ -7,7 +7,7 @@ ConditionPathIsDirectory=|/sys/hypervisor/s390
 ConditionKernelCommandLine=|inst.notmux
 
 [Service]
-Environment=HOME=/root MALLOC_CHECK_=2 MALLOC_PERTURB_=204 PATH=/usr/bin:/bin:/sbin:/usr GDK_BACKEND=x11 XDG_RUNTIME_DIR=/tmp LANG=en_US.UTF-8
+Environment=HOME=/root MALLOC_CHECK_=2 MALLOC_PERTURB_=204 PATH=/usr/bin:/bin:/sbin:/usr GDK_BACKEND=wayland XDG_RUNTIME_DIR=/run/user/0 GIO_USE_VFS=local LANG=en_US.UTF-8
 Type=oneshot
 WorkingDirectory=/root
 ExecStart=/usr/sbin/anaconda

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",