Stop writing out_input_tensor.npy

This isn't necessary and is inconsistent as the only other things we write to disk are the final outputs.

Change-Id: Ib41454ee02f1f403dab52b6e456ee6b22e6cc285

scenario/scenario.json

@@ -467,7 +467,6 @@
                     960,
                     12
                 ],
-                "dst": "./out_input_tensor.npy",
                 "format": "VK_FORMAT_R8_SINT",
                 "shader_access": "readwrite",
                 "tiling": "LINEAR"