Remove the curses dialog, thereby deprecating the --help and --dialog command line options (#3665)

* Remove the curses dialog, thereby deprecating the --help and --dialog command line options

* Deprecate --dialog and suppress --text

certbot/cli.py

@@ -376,7 +376,7 @@ class HelpfulArgumentParser(object):
 
         # Do any post-parsing homework here
 
-        if self.verb == "renew" and not parsed_args.dialog_mode:
+        if self.verb == "renew":
             parsed_args.noninteractive_mode = True
 
         if parsed_args.staging or parsed_args.dry_run:
@@ -388,17 +388,6 @@ class HelpfulArgumentParser(object):
         if parsed_args.must_staple:
             parsed_args.staple = True
 
-        # Avoid conflicting args
-        conficting_args = ["quiet", "noninteractive_mode", "text_mode"]
-        if parsed_args.dialog_mode:
-            for arg in conficting_args:
-                if getattr(parsed_args, arg):
-                    raise errors.Error(
-                        ("Conflicting values for displayer."
-                        " {0} conflicts with dialog_mode").format(arg))
-        elif parsed_args.verbose_count > flag_default("verbose_count"):
-            parsed_args.text_mode = True
-
         if parsed_args.validate_hooks:
             hooks.validate_hooks(parsed_args)
 
@@ -677,16 +666,13 @@ def prepare_and_parse_args(plugins, args, detect_defaults=False):  # pylint: dis
         "e.g. -vvv.")
     helpful.add(
         None, "-t", "--text", dest="text_mode", action="store_true",
-        help="Use the text output instead of the curses UI.")
+        help=argparse.SUPPRESS)
     helpful.add(
         [None, "automation"], "-n", "--non-interactive", "--noninteractive",
         dest="noninteractive_mode", action="store_true",
         help="Run without ever asking for user input. This may require "
               "additional command line flags; the client will try to explain "
               "which ones are required if it finds one missing")
-    helpful.add(
-        None, "--dialog", dest="dialog_mode", action="store_true",
-        help="Run using interactive dialog menus")
     helpful.add(
         [None, "run", "certonly"],
         "-d", "--domains", "--domain", dest="domains",
@@ -890,6 +876,7 @@ def prepare_and_parse_args(plugins, args, detect_defaults=False):  # pylint: dis
         " shell constructs, so you can use this switch to disable it.")
 
     helpful.add_deprecated_argument("--agree-dev-preview", 0)
+    helpful.add_deprecated_argument("--dialog", 0)
 
     _create_subparsers(helpful)
     _paths_parser(helpful)