Update 'adapter_config.json' due to the peft compatible error

The error was caused by `"enable_lora": null`, and `"merge_weights": false`due to the peft compatible error

adapter_config.json

@@ -1,12 +1,10 @@
 {
   "base_model_name_or_path": "decapoda-research/llama-7b-hf",
   "bias": "none",
-  "enable_lora": null,
   "fan_in_fan_out": false,
   "inference_mode": true,
   "lora_alpha": 16,
   "lora_dropout": 0.05,
-  "merge_weights": false,
   "modules_to_save": null,
   "peft_type": "LORA",
   "r": 16,