removed max annotation number

app.py

@@ -63,16 +63,10 @@ def download_image(url):
 
 
 def fetch_random_entry(annotator):
-    """Fetch a random entry from the database that hasn't been rated three times yet."""
+    """Fetch a random entry from the database that hasn't been rated by the specified annotator."""
     pipeline = [
-        {
-            "$addFields": {
-                "ratings_count": {"$size": "$ratings"}
-            }
-        },
         {
             "$match": {
-                "ratings_count": {"$lt": 5},
                 "ratings.rater": {"$ne": annotator}  # exclude entries where rater is the specified annotator
             }
         },