remove unreachable s3 bucket error branch

Author: Copilot

poseinterface/clips.py

@@ -363,8 +363,6 @@ def extract_start_frames_label_s3(
             raise FileNotFoundError(
                 f"File not found on S3: {s3_cliplabels_uri}"
             ) from e
-        elif error_code == "NoSuchBucket":
-            raise ValueError(f"Bucket does not exist: {bucket_name}") from e
         else:
             raise