MAINT: drop unneeded copy()

Author: dnicolodi

mesonpy/__init__.py

@@ -128,7 +128,7 @@ def _init_colors() -> Dict[str, str]:
 
 
 _SUFFIXES = importlib.machinery.all_suffixes()
-_EXTENSION_SUFFIXES = importlib.machinery.EXTENSION_SUFFIXES.copy()
+_EXTENSION_SUFFIXES = importlib.machinery.EXTENSION_SUFFIXES
 _EXTENSION_SUFFIX_REGEX = re.compile(r'^\.(?:(?P<abi>[^.]+)\.)?(?:so|pyd|dll)$')
 assert all(re.match(_EXTENSION_SUFFIX_REGEX, x) for x in _EXTENSION_SUFFIXES)