Centralize logging (#6434)

* Logging

* Style

* hf_logging > utils.logging

* Address @thomwolf's comments

* Update test

* Update src/transformers/benchmark/benchmark_utils.py

Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* Revert bad change

Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

src/transformers/commands/serving.py

@@ -1,4 +1,3 @@
-import logging
 from argparse import ArgumentParser, Namespace
 from typing import Any, List, Optional
 
@@ -6,6 +5,8 @@ from transformers import Pipeline
 from transformers.commands import BaseTransformersCLICommand
 from transformers.pipelines import SUPPORTED_TASKS, pipeline
 
+from ..utils import logging
+
 
 try:
     from fastapi import Body, FastAPI, HTTPException