[CI/Build] remove regex from build dependencies

pyproject.toml

@@ -8,7 +8,6 @@ requires = [
     "setuptools-scm>=8.0",
     "torch == 2.7.0",
     "wheel",
-    "regex",
     "jinja2",
 ]
 build-backend = "setuptools.build_meta"

setup.py

@@ -5,12 +5,12 @@
 import json
 import logging
 import os
+import re
 import subprocess
 import sys
 from pathlib import Path
 from shutil import which
 
-import regex as re
 import torch
 from packaging.version import Version, parse
 from setuptools import Extension, setup

tools/enforce_regex_import.py

@@ -58,6 +58,9 @@ def main() -> int:
         if not Path(filepath).exists():
             continue
 
+        if filepath == "setup.py":
+            continue
+
         violations = check_file(filepath)
         if violations:
             print(f"\n❌ {filepath}:")