Remove unnecessary test

Author: josefarias

spec/fixtures/vcr_cassettes/image_basic_functionality_google_nano-banana_an_official_replicate_model_can_paint_images_with_custom_parameters.yml

@@ -80,18 +80,6 @@ def save_and_verify_deferred_image(image)
       save_and_verify_deferred_image image
     end
 
-    it 'google/nano-banana, an official replicate model, can paint images with custom parameters' do
-      ref_img1 = 'https://replicate.delivery/pbxt/NbYIclp4A5HWLsJ8lF5KgiYSNaLBBT1jUcYcHYQmN1uy5OnN/tmpcqc07f_q.png'
-      ref_img2 = 'https://replicate.delivery/pbxt/NbYId45yH8s04sptdtPcGqFIhV7zS5GTcdS3TtNliyTAoYPO/Screenshot%202025-08-26%20at%205.30.12%E2%80%AFPM.png'
-      image = RubyLLM.paint('a siamese cat', model: 'google/nano-banana',
-                                             image_input: [ref_img1, ref_img2],
-                                             output_format: 'png')
-
-      expect(image).to be_a(RubyLLM::DeferredImage)
-
-      save_and_verify_deferred_image image
-    end
-
     it 'prunaai/hidream-l1-fast, an unofficial replicate model, can paint images' do
       image = RubyLLM.paint('a siamese cat', model: 'prunaai/hidream-l1-fast', output_format: 'png')