remove double seed logic (used seed doesnt match the JiT seed application)

app.py

@@ -489,15 +489,6 @@ with gr.Blocks(title="Z-Image Demo") as demo:
     # Dummy enable_enhance variable set to False
     enable_enhance = gr.State(value=False)
 
-    def update_seed(current_seed, random_seed_enabled):
-        if random_seed_enabled:
-            new_seed = random.randint(1, 1000000)
-        else:
-            new_seed = current_seed if current_seed != -1 else random.randint(1, 1000000)
-        return gr.update(value=new_seed)
-
-    generate_btn.click(update_seed, inputs=[seed, random_seed], outputs=[seed])
-
     generate_btn.click(
         generate,
         inputs=[prompt_input, resolution, seed, steps, shift, enable_enhance, random_seed, output_gallery],