[Auto Sync] Update backend.py (20251130) (#14153)

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Co-authored-by: Stefan He <hebiaobuaa@gmail.com>
Co-authored-by: Byron Hsu <byronhsu1230@gmail.com>

python/sglang/srt/compilation/backend.py

@@ -27,7 +27,6 @@ logger = logging.getLogger(__name__)
 
 SPLIT_OPS = [
     "sglang.unified_attention_with_output",
-    "sglang.inplace_all_reduce",
     "sglang.gdn_with_output",
 ]