do not upgrqade setuptools unless linux

Author: dwoz

tests/test_verify_build.py

@@ -107,7 +107,10 @@ def test_pip_install_salt_git(pipexec, build, build_dir, pyexec, build_version):
     if sys.platform == "darwin" and "3.13" in build_version:
         pytest.xfail("Salt does not work with 3.13 on macos yet")
 
-    subprocess.run([pipexec, "--upgrade", "install", "setuptools>=72.2.0"], check=True)
+    # if sys.platform == "linux":
+    #    subprocess.run(
+    #        [pipexec, "--upgrade", "install", "setuptools>=72.2.0"], check=True
+    #    )
 
     env = os.environ.copy()
     env["RELENV_BUILDENV"] = "yes"