added models deletion

app.py

@@ -358,6 +358,14 @@ def main():
             st.text(f"Hybrid hit rate: {hybrid_hit_rate}")
             st.text(f"Hybrid MRR: {vector_mrr}")
             st.text(f"Total misses: {total_misses}")
+            
+        delete_models = st.button('Delete all models')
+        if delete_models:
+            for model in os.listdir("models"):
+                model_path = os.path.join("models", model)
+                if os.path.isdir(model_path):
+                    shutil.rmtree(model_path)
+            st.write("Models deleted")
                 
         st.write("----------")