Add ruff, remove black, isort, flake8, pylint (#3092)

* black, isort, flake8 -> ruff

* remove unused

* add back needed import

* fix

tests/e2e/kernels/test_lora.py

@@ -1,7 +1,5 @@
 """Tests for LoRA custom autograd."""
 
-# pylint: disable=invalid-name,redefined-outer-name
-
 import pytest
 import torch
 from bitsandbytes.functional import QuantState
@@ -333,7 +331,7 @@ def test_lora_qkv(sample_tensors):
     X.requires_grad = True
 
     # Test without LoRA adapters
-    # pylint: disable=duplicate-code
+
     Q1, K1, V1 = LoRA_QKV.apply(
         X,
         q_weight,