changing show background author checkbox visibility to False, as we are not using it

app.py

@@ -506,7 +506,7 @@ def app(share=False, use_cluster_feats=False):
 
         combined_btn  = gr.Button("Show Combined Spans")
         combined_html = gr.HTML()
-        show_background_checkbox = gr.Checkbox(label="Show spans in background authors", value=False)
+        show_background_checkbox = gr.Checkbox(label="Show spans in background authors", value=False, visible=False)
         background_html = gr.HTML(visible=False)
         # print(f"in app: all_feats={feature_list_state.value}")
         # print(f"in app: sel_feat_llm={features_rb.value}")