remove deprecated CLI arguments

These have been removed:
- `diffusion_steps`
- `image_height`
- `image_width`
- `stable_diffusion_sampler`
- `sd_negative_prompt`
- `sd_negative_prompt_nsfw`

All of these settings are still changeable via the config file.

dot update for ryaml

src/oobabot/settings.py

@@ -622,137 +622,6 @@ def __init__(self):
                 )
             )
 
-        self._add_deprecated_settings()
-
-    def _add_deprecated_settings(self) -> None:
-        ###########################################################
-        # Deprecated Settings
-        # These used to be part of the Stable Diffusion section,
-        # but now are covered in the stable_diffusion->request_params
-        # section of the config.yml file.
-        #
-        # These are still here for backwards compatibility, but
-        # will be removed in a future release.
-        #
-        # They're being moved since they're redundant with the
-        # request_params values, and it's confusing to have those
-        # set in two separate places.
-        #
-        # The settings won't be written to the config.yaml template,
-        # as they're already covered in the request_params section.
-
-        def set_sd_parm(param: str, value: oesp.SettingValueType):
-            if not value:
-                return
-            setting = self.stable_diffusion_settings.get_setting("request_params")
-
-            # get returns a copy of the settings dict, so we need to
-            # push it back after we make a change
-            setting_dict = setting.get()
-            setting_dict[param] = value
-            setting.set_value(setting_dict)
-
-        self.deprecated_settings = oesp.ConfigSettingGroup(
-            "Deprecated Settings",
-            include_in_yaml=False,
-            description="These settings are deprecated and will be removed in "
-            + "a future release.  Please set them with config.yml instead.",
-        )
-        self.setting_groups.append(self.deprecated_settings)
-
-        self.deprecated_settings.add_setting(
-            oesp.ConfigSetting[int](
-                name="diffusion_steps",
-                default=0,
-                description_lines=[
-                    textwrap.dedent(
-                        """
-                        Number of diffusion steps to take when generating an image.
-                        """
-                    )
-                ],
-                fn_on_set=lambda x: set_sd_parm("steps", int(x)),
-            )
-        )
-        self.deprecated_settings.add_setting(
-            oesp.ConfigSetting[int](
-                name="image_height",
-                default=0,
-                description_lines=[
-                    textwrap.dedent(
-                        """
-                        Size of images to generate.  This is the height of the image
-                        in pixels.
-                        """
-                    )
-                ],
-                fn_on_set=lambda x: set_sd_parm("height", int(x)),
-            )
-        )
-        self.deprecated_settings.add_setting(
-            oesp.ConfigSetting[int](
-                name="image_width",
-                default=0,
-                description_lines=[
-                    textwrap.dedent(
-                        """
-                        Size of images to generate.  This is the width of the image
-                        in pixels.
-                        """
-                    )
-                ],
-                fn_on_set=lambda x: set_sd_parm("width", int(x)),
-            )
-        )
-        self.deprecated_settings.add_setting(
-            oesp.ConfigSetting[str](
-                name="stable_diffusion_sampler",
-                default="",
-                description_lines=[
-                    textwrap.dedent(
-                        """
-                        Sampler to use when generating images.  If not specified,
-                        the one set on the AUTOMATIC1111 server will be used.
-                        """
-                    )
-                ],
-                cli_args=["--stable-diffusion-sampler", "--sd-sampler"],
-                fn_on_set=lambda x: set_sd_parm("sampler", str(x)),
-            )
-        )
-        self.deprecated_settings.add_setting(
-            oesp.ConfigSetting[str](
-                name="sd_negative_prompt",
-                default="",
-                description_lines=[
-                    textwrap.dedent(
-                        """
-                        Negative prompt to use when generating images.  This will
-                        discourage Stable Diffusion from generating images with the
-                        specified content.  By default, this is set to follow
-                        Discord's TOS.
-                        """
-                    )
-                ],
-                fn_on_set=lambda x: set_sd_parm("negative_prompt", str(x)),
-            )
-        )
-        self.deprecated_settings.add_setting(
-            oesp.ConfigSetting[str](
-                name="sd_negative_prompt_nsfw",
-                default="",
-                description_lines=[
-                    textwrap.dedent(
-                        """
-                        Negative prompt to use when generating images in a channel
-                        marked as 'Age-Restricted'.
-                        """
-                    )
-                ],
-                fn_on_set=lambda x: set_sd_parm("negative_prompt_nsfw", str(x)),
-            )
-        )
-
     META_INSTRUCTION = (
         "\n\n"
         + "# " * 30