remove extra method

src/database.rs

@@ -20,10 +20,6 @@ impl Database {
         Ok(table.get(item_id)?.map(|v| v.value()))
     }
 
-    pub fn is_processed(&self, item_id: &str) -> Result<bool, Error> {
-        Ok(self.get(item_id)?.is_some())
-    }
-
     pub fn process(&mut self, item_id: &str) -> Result<(), Error> {
         let write = self.0.begin_write()?;
         {

src/main.rs

@@ -44,7 +44,7 @@ async fn main() {
                     let items = result.content.items;
                     debug!("received {:?} items to handle...", items.len());
                     for item in items {
-                        if database.is_processed(&item.id).is_ok_and(|r| r) {
+                        if database.get(&item.id).is_ok_and(|r| r.is_some()) {
                             debug!(
                                 "item `{}` for channel `{c}` already processed; skip handle.",
                                 item.id