[gluon] fix lint (#7246)

I think triton-lang/triton#7215 experienced some
weird lint issue where it passed locally (and again in CI?) but failed
after an automatic merge into main, not sure what happened.



https://github.com/triton-lang/triton/actions/runs/15734903332/job/44445442478

Author: SamGinzburg

python/test/gluon/test_core.py

@@ -1,7 +1,7 @@
 import torch
 import pytest
 
-from triton._internal_testing import is_ampere_or_newer, is_hopper_or_newer
+from triton._internal_testing import is_cuda, is_ampere_or_newer, is_hopper_or_newer
 from triton.experimental import gluon
 from triton.experimental.gluon import language as ttgl
 from triton.experimental.gluon.language.nvidia.ampere import async_copy, mbarrier

python/test/gluon/test_frontend.py

@@ -12,7 +12,7 @@
 from triton.experimental.gluon.nvidia.hopper import TensorDescriptor
 from triton._filecheck import filecheck_test, run_parser
 import triton.language as tl
-from triton._internal_testing import is_ampere_or_newer, is_blackwell, is_hopper_or_newer
+from triton._internal_testing import is_cuda, is_ampere_or_newer, is_blackwell, is_hopper_or_newer
 from triton.compiler.errors import CompilationError, CompileTimeAssertionFailure
 
 TARGET_PAT = re.compile('ttg.target = "[^"]*"')