fix wrong import

Author: shewu-quic

examples/qualcomm/oss_scripts/llama/model/static_llama.py

@@ -12,10 +12,8 @@
 import torch
 import torch.nn as nn
 import torch.nn.functional as F
-from executorch.examples.models.llama.llama_transformer import (
-    ModelArgs,
-    precompute_freqs_cis,
-)
+from executorch.examples.models.llama.model_args import ModelArgs
+from executorch.examples.models.llama.rope import precompute_freqs_cis
 
 
 def apply_rotary_emb_single(