settings: Remove unused message_editor setting (#60260)

Used this at one point when we still had chat in Collab, but now it's
unused.

Release Notes:

- N/A

assets/settings/default.json

@@ -1025,11 +1025,6 @@
     // Default: project_diff
     "entry_primary_click_action": "project_diff",
   },
-  "message_editor": {
-    // Whether to automatically replace emoji shortcodes with emoji characters.
-    // For example: typing `:wave:` gets replaced with `👋`.
-    "auto_replace_emoji_shortcode": true,
-  },
   "agent": {
     // Whether the inline assistant should use streaming tools, when available
     "inline_assistant_use_streaming_tools": true,

crates/settings/src/vscode_import.rs

@@ -199,7 +199,6 @@ impl VsCodeSettings {
             language_models: None,
             line_indicator_format: None,
             log: None,
-            message_editor: None,
             node: self.node_binary_settings(),
 
             outline_panel: self.outline_panel_settings_content(),

crates/settings_content/src/settings_content.rs

@@ -211,9 +211,6 @@ pub struct SettingsContent {
 
     pub project_panel: Option<ProjectPanelSettingsContent>,
 
-    /// Configuration for the Message Editor
-    pub message_editor: Option<MessageEditorSettings>,
-
     /// Configuration for Node-related features
     pub node: Option<NodeBinarySettings>,
 
@@ -839,16 +836,6 @@ pub struct PanelSettingsContent {
     pub default_width: Option<f32>,
 }
 
-#[with_fallible_options]
-#[derive(Clone, Default, Serialize, Deserialize, JsonSchema, MergeFrom, Debug, PartialEq)]
-pub struct MessageEditorSettings {
-    /// Whether to automatically replace emoji shortcodes with emoji characters.
-    /// For example: typing `:wave:` gets replaced with `👋`.
-    ///
-    /// Default: false
-    pub auto_replace_emoji_shortcode: Option<bool>,
-}
-
 #[with_fallible_options]
 #[derive(Clone, Default, Serialize, Deserialize, JsonSchema, MergeFrom, Debug, PartialEq)]
 pub struct FileFinderSettingsContent {

crates/settings_ui/src/page_data.rs

@@ -9791,7 +9791,7 @@ fn language_settings_data() -> Box<[SettingsPageItem]> {
         ]
     }
 
-    fn global_only_miscellaneous_sub_section() -> [SettingsPageItem; 4] {
+    fn global_only_miscellaneous_sub_section() -> [SettingsPageItem; 3] {
         [
             SettingsPageItem::SettingItem(SettingItem {
                 title: "Image Viewer",
@@ -9871,30 +9871,6 @@ fn language_settings_data() -> Box<[SettingsPageItem]> {
                     }],
                 ],
             }),
-            SettingsPageItem::SettingItem(SettingItem {
-                title: "Auto Replace Emoji Shortcode",
-                description: "Whether to automatically replace emoji shortcodes with emoji characters.",
-                field: Box::new(SettingField {
-                    organization_override: None,
-                    json_path: Some("message_editor.auto_replace_emoji_shortcode"),
-                    pick: |settings_content| {
-                        settings_content
-                            .message_editor
-                            .as_ref()
-                            .and_then(|message_editor| {
-                                message_editor.auto_replace_emoji_shortcode.as_ref()
-                            })
-                    },
-                    write: |settings_content, value, _| {
-                        settings_content
-                            .message_editor
-                            .get_or_insert_default()
-                            .auto_replace_emoji_shortcode = value;
-                    },
-                }),
-                metadata: None,
-                files: USER,
-            }),
             SettingsPageItem::SettingItem(SettingItem {
                 title: "Drop Size Target",
                 description: "Relative size of the drop target in the editor that will open dropped file as a split pane.",