remove PeftTrainer

Former-commit-id: cc0cff3e991f194732d278e627648e528118a719

src/llmtuner/tuner/sft/trainer.py

@@ -4,10 +4,10 @@ import torch
 import numpy as np
 import torch.nn as nn
 from typing import TYPE_CHECKING, Any, Dict, List, Optional, Tuple, Union
+from transformers import Seq2SeqTrainer
 
 from llmtuner.extras.constants import IGNORE_INDEX
 from llmtuner.extras.logging import get_logger
-from llmtuner.tuner.core.trainer import PeftTrainer
 
 if TYPE_CHECKING:
     from transformers.trainer import PredictionOutput
@@ -16,7 +16,7 @@ if TYPE_CHECKING:
 logger = get_logger(__name__)
 
 
-class Seq2SeqPeftTrainer(PeftTrainer):
+class CustomSeq2SeqTrainer(Seq2SeqTrainer):
     r"""
     Inherits PeftTrainer to compute generative metrics such as BLEU and ROUGE.
     """

src/llmtuner/tuner/sft/workflow.py

@@ -9,7 +9,7 @@ from llmtuner.extras.misc import get_logits_processor
 from llmtuner.extras.ploting import plot_loss
 from llmtuner.tuner.core import load_model_and_tokenizer
 from llmtuner.tuner.sft.metric import ComputeMetrics
-from llmtuner.tuner.sft.trainer import Seq2SeqPeftTrainer
+from llmtuner.tuner.sft.trainer import CustomSeq2SeqTrainer
 
 if TYPE_CHECKING:
     from transformers import TrainerCallback
@@ -45,8 +45,7 @@ def run_sft(
     training_args = Seq2SeqTrainingArguments(**training_args_dict)
 
     # Initialize our Trainer
-    trainer = Seq2SeqPeftTrainer(
-        finetuning_args=finetuning_args,
+    trainer = CustomSeq2SeqTrainer(
         model=model,
         args=training_args,
         tokenizer=tokenizer,