Cleanup unused message embedding code

Fixup some warnings

src/bin/import_search_history.rs

@@ -95,10 +95,11 @@ async fn main() -> Result<()> {
             if args.skip_existing
                 && let Ok(exists) =
                     dao_instance.search_exists(&context, search.timestamp, &search.query)
-                    && exists {
-                        skipped_count += 1;
-                        continue;
-                    }
+                && exists
+            {
+                skipped_count += 1;
+                continue;
+            }
 
             // Only insert if we have an embedding
             if let Some(embedding) = embedding_opt {