Simplify the SerializableItem::cleanup implementation (#29567)

Release Notes:

- N/A

---------

Co-authored-by: Julia Ryan <juliaryan3.14@gmail.com>

crates/component_preview/src/component_preview.rs

@@ -23,7 +23,7 @@ use project::Project;
 use ui::{Divider, HighlightedLabel, ListItem, ListSubHeader, prelude::*};
 
 use ui_input::SingleLineInput;
-use workspace::{AppState, ItemId, SerializableItem};
+use workspace::{AppState, ItemId, SerializableItem, delete_unloaded_items};
 use workspace::{Item, Workspace, WorkspaceId, item::ItemEvent};
 
 pub fn init(app_state: Arc<AppState>, cx: &mut App) {
@@ -860,11 +860,13 @@ impl SerializableItem for ComponentPreview {
         _window: &mut Window,
         cx: &mut App,
     ) -> Task<gpui::Result<()>> {
-        cx.background_spawn(async move {
-            COMPONENT_PREVIEW_DB
-                .delete_unloaded_items(workspace_id, alive_items)
-                .await
-        })
+        delete_unloaded_items(
+            alive_items,
+            workspace_id,
+            "component_previews",
+            &COMPONENT_PREVIEW_DB,
+            cx,
+        )
     }
 
     fn serialize(

crates/component_preview/src/persistence.rs

@@ -47,30 +47,4 @@ impl ComponentPreviewDb {
             WHERE item_id = ? AND workspace_id = ?
         }
     }
-
-    pub async fn delete_unloaded_items(
-        &self,
-        workspace: WorkspaceId,
-        alive_items: Vec<ItemId>,
-    ) -> Result<()> {
-        let placeholders = alive_items
-            .iter()
-            .map(|_| "?")
-            .collect::<Vec<&str>>()
-            .join(", ");
-
-        let query = format!(
-            "DELETE FROM component_previews WHERE workspace_id = ? AND item_id NOT IN ({placeholders})"
-        );
-
-        self.write(move |conn| {
-            let mut statement = Statement::prepare(conn, query)?;
-            let mut next_index = statement.bind(&workspace, 1)?;
-            for id in alive_items {
-                next_index = statement.bind(&id, next_index)?;
-            }
-            statement.exec()
-        })
-        .await
-    }
 }