disable safety checker

app.py

@@ -13,7 +13,8 @@ pipeline = StableDiffusionWalkPipeline.from_pretrained(
     revision="fp16",
     scheduler=LMSDiscreteScheduler(
         beta_start=0.00085, beta_end=0.012, beta_schedule="scaled_linear"
-    )
+    ),
+    safety_checker=None
 ).to("cuda")
 pipeline.enable_attention_slicing()