Nuke the commented out check

cython/setup.py.in

@@ -5,15 +5,6 @@ try:
 except ImportError:
     from distutils.core import setup, find_packages
 
-# if 'SETUP_PY_NO_CHECK' not in os.environ:
-#     script_path = os.path.abspath(os.path.realpath(__file__))
-#     install_path = os.path.abspath(os.path.realpath(os.path.join('${GTSAM_CYTHON_INSTALL_PATH}${GTSAM_BUILD_TAG}', 'setup.py')))
-#     if script_path != install_path:
-#         print('setup.py is being run from an unexpected location: "{}"'.format(script_path))
-#         print('please run `make install` and run the script from there')
-#         sys.exit(1)
-
-
 packages = find_packages()
 
 setup(