fix label removal check

src/handlers/no_merges.rs

@@ -135,14 +135,14 @@ pub(super) async fn handle_input(
 
     if should_send {
         if !first_time {
-            // Check if the labels are already set.
+            // Check if the labels are still set.
             // Otherwise, they were probably removed manually.
-            if !event
-                .issue
-                .labels()
-                .iter()
-                .all(|label| config.labels.contains(&label.name))
-            {
+            let any_removed = config.labels.iter().any(|label| {
+                // No label on the issue matches.
+                event.issue.labels().iter().all(|l| &l.name != label)
+            });
+
+            if any_removed {
                 // Assume it was a false positive, so don't
                 // re-add the labels or send a message this time.
                 state.save().await?;