add tp_size in config doc

src/axolotl/utils/trainer.py

@@ -543,18 +543,11 @@ def setup_fsdp_envs(cfg):
         ] = cfg.fsdp_config.fsdp_transformer_layer_cls_to_wrap
 
 
-def setup_tp_envs():
-    os.environ["ACCELERATE_USE_TP"] = "true"
-
-
 def prepare_optim_env(cfg):
     if not check_cuda_p2p_ib_support():
         if os.getenv("NCCL_P2P_DISABLE") is None:
             os.environ["NCCL_P2P_DISABLE"] = "1"
 
-    if cfg.tp_size > 1:
-        setup_tp_envs()
-
     if cfg.fsdp:
         setup_fsdp_envs(cfg)
     elif cfg.deepspeed: