Merge branch 'chroma-fork' into chroma-final

Author: DN6

src/diffusers/pipelines/chroma/pipeline_chroma.py

@@ -675,13 +675,6 @@ def __call__(
             batch_size = 1
         elif prompt is not None and isinstance(prompt, list):
             batch_size = len(prompt)
-            if negative_prompt is not None and isinstance(negative_prompt, str):
-                negative_prompt = [negative_prompt] * batch_size
-            elif negative_prompt is not None and isinstance(negative_prompt, list):
-                if len(negative_prompt) == 1:
-                    negative_prompt = [negative_prompt] * batch_size
-                else:
-                    raise ValueError("prompt and negative_prompt are lists of unequal size")
         else:
             batch_size = prompt_embeds.shape[0]