Remove caching of examples

We have too many examples, and the space runs out of memory, so disable
the caching

app.py

@@ -109,6 +109,7 @@ iface = gr.Interface(fn=run_demo,
                      outputs=default_outputs,
                      title="CLIP Grounding Explainability",
                      description=description,
+                     cache_examples=False,
                      examples=[["example_images/London.png", "London Eye"],
                                ["example_images/London.png", "Big Ben"],
                                ["example_images/harrypotter.png", "Harry"],
@@ -190,6 +191,7 @@ iface_NER = gr.Interface(fn=NER_demo,
                          outputs=outputs_NER,
                          title="Named Entity Grounding explainability using CLIP",
                          description=description_NER,
+                         cache_examples=False,
                          examples=[
                              ["example_images/London.png", "In this image we see Big Ben and the London Eye, on both sides of the river Thames."],
                              ["example_images/harrypotter.png", "Hermione, Harry and Ron in their school uniform"],