revert setup.py

Author: ohmayr

setup.py

@@ -18,7 +18,6 @@
 import shutil
 import setuptools
 import setuptools.command.build_ext
-import re
 
 _EXTRA_DLL = "extra-dll"
 _DLL_FILENAME = "crc32c.dll"
@@ -27,14 +26,7 @@
 CRC32C_PURE_PYTHON_EXPLICIT = "CRC32C_PURE_PYTHON" in os.environ
 _FALSE_OPTIONS = ("0", "false", "no", "False", "No", None)
 CRC32C_PURE_PYTHON = os.getenv("CRC32C_PURE_PYTHON") not in _FALSE_OPTIONS
-PACKAGE_ROOT = os.path.abspath(os.path.dirname(__file__))
 
-version = None
-
-with open(os.path.join(PACKAGE_ROOT, "pyproject.toml")) as fp:
-    version_candidates = re.findall(r"(?<=\")\d+.\d+.\d+(?=\")", fp.read())
-    assert len(version_candidates) == 1
-    version = version_candidates[0]
 
 def copy_dll(build_lib):
     install_prefix = os.environ.get("CRC32C_INSTALL_PREFIX")