[misc] refactor launch API and tensor constructor (#5666)

* [misc] remove config arg from initialize

* [misc] remove old tensor contrusctor

* [plugin] add npu support for ddp

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* [devops] fix doc test ci

* [test] fix test launch

* [doc] update launch doc

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

examples/language/gpt/titans/train_gpt.py

@@ -36,9 +36,9 @@ def main():
     args = parser.parse_args()
     disable_existing_loggers()
     if args.from_torch:
-        colossalai.launch_from_torch(config=args.config)
+        colossalai.launch_from_torch()
     else:
-        colossalai.launch_from_slurm(config=args.config, host=args.host, port=29500, seed=42)
+        colossalai.launch_from_slurm(host=args.host, port=29500, seed=42)
     logger = get_dist_logger()
 
     data_path = None if args.use_dummy_dataset else os.environ["DATA"]