delete unused parameters in config.json file

config.json

@@ -17,8 +17,6 @@
   "n_layer": 36,
   "n_positions": 1024,
   "quantization_config": {
-    "_load_in_4bit": true,
-    "_load_in_8bit": false,
     "bnb_4bit_compute_dtype": "bfloat16",
     "bnb_4bit_quant_storage": "uint8",
     "bnb_4bit_quant_type": "nf4",
@@ -28,8 +26,7 @@
     "llm_int8_skip_modules": null,
     "llm_int8_threshold": 6.0,
     "load_in_4bit": true,
-    "load_in_8bit": false,
-    "quant_method": "bitsandbytes"
+    "load_in_8bit": false
   },
   "reorder_and_upcast_attn": false,
   "resid_pdrop": 0.1,