ui: Remove old settings components (zed-industries#15347)

This PR removes the old settings components, as they've been adapted
into other components for the settings UI.

Release Notes:

- N/A

crates/storybook/src/story_selector.rs

@@ -32,7 +32,6 @@ pub enum ComponentStory {
     OverflowScroll,
     Picker,
     Scroll,
-    Setting,
     Tab,
     TabBar,
     Text,
@@ -66,7 +65,6 @@ impl ComponentStory {
             Self::ListItem => cx.new_view(|_| ui::ListItemStory).into(),
             Self::OverflowScroll => cx.new_view(|_| crate::stories::OverflowScrollStory).into(),
             Self::Scroll => ScrollStory::view(cx).into(),
-            Self::Setting => cx.new_view(|cx| ui::SettingStory::init(cx)).into(),
             Self::Text => TextStory::view(cx).into(),
             Self::Tab => cx.new_view(|_| ui::TabStory).into(),
             Self::TabBar => cx.new_view(|_| ui::TabBarStory).into(),

crates/ui/src/components.rs

@@ -17,7 +17,6 @@ mod popover;
 mod popover_menu;
 mod radio;
 mod right_click_menu;
-mod setting;
 mod settings_container;
 mod settings_group;
 mod stack;
@@ -48,7 +47,6 @@ pub use popover::*;
 pub use popover_menu::*;
 pub use radio::*;
 pub use right_click_menu::*;
-pub use setting::*;
 pub use settings_container::*;
 pub use settings_group::*;
 pub use stack::*;