Remove dependency to distutils

Because distutils is deprecated since Python 3.10.

Test: atest android.security.cts.SELinuxHostTest
Change-Id: I29d390dcfbeaa65b2c868bbc8648835c644e3d18
diff --git a/tests/sepolicy_tests.py b/tests/sepolicy_tests.py
index 79c55de..e940681 100644
--- a/tests/sepolicy_tests.py
+++ b/tests/sepolicy_tests.py
@@ -18,7 +18,8 @@
 import policy
 import re
 import sys
-import distutils.ccompiler
+
+SHARED_LIB_EXTENSION = '.dylib' if sys.platform == 'darwin' else '.so'
 
 #############################################################
 # Tests
@@ -158,7 +159,7 @@
     (options, args) = parser.parse_args()
 
     libpath = os.path.join(os.path.dirname(os.path.realpath(__file__)),
-        "libsepolwrap" + distutils.ccompiler.new_compiler().shared_lib_extension)
+                           "libsepolwrap" + SHARED_LIB_EXTENSION)
     if not os.path.exists(libpath):
         sys.exit("Error: libsepolwrap does not exist. Is this binary corrupted?\n")