Remove rms_norm.py in TARGETS

Author: shewu-quic

examples/models/llama/TARGETS

@@ -112,7 +112,6 @@ runtime.python_library(
         "source_transformation/prune_vocab.py",
         "source_transformation/quantize.py",
         "source_transformation/custom_kv_cache.py",
-        "source_transformation/rms_norm.py",
         "source_transformation/rope.py",
         "source_transformation/sdpa.py",
         "source_transformation/spin_quant.py",