Remove label.

app.py

@@ -343,7 +343,11 @@ with blocks:
                     elem_id="f1-tier-select",
                 )
 
-            accuracy_plot = gr.Plot(value=_initial_accuracy_fig, elem_id="f1-accuracy-plot")
+            accuracy_plot = gr.Plot(
+                value=_initial_accuracy_fig,
+                elem_id="f1-accuracy-plot",
+                show_label=False,
+            )
 
             tier_selector.change(
                 lambda t: build_accuracy_figure(t),