Extend lint test to test/ directory (#13247)

test/srt/quant/test_awq.py

@@ -1,8 +1,6 @@
 import unittest
 from types import SimpleNamespace
 
-import requests
-
 from sglang.srt.utils import kill_process_tree
 from sglang.test.run_eval import run_eval
 from sglang.test.test_utils import (

test/srt/quant/test_triton_scaled_mm.py

@@ -1,4 +1,3 @@
-import itertools
 import unittest
 from typing import Optional