Merge pull request #39 from SubstrateLabs/chris/remove-bg-nit

remove unused fg variable

Author: csreesan

examples/remove_bg.py renamed to examples/remove_foreground.py

@@ -15,8 +15,7 @@
 
 substrate = Substrate(api_key=api_key, timeout=60 * 5)
 prompt = "by edward hopper, a red leather wing chair in an open room, pillars, amazing painting composition"
-image = GenerateImage(prompt=prompt, negative_prompt="photo realistic")
-fg = RemoveBackground(image_uri=image.future.image_uri)
+image = GenerateImage(prompt=prompt)
 mask = RemoveBackground(
     image_uri=image.future.image_uri,
     return_mask=True,