Made setup.py always set PYTHON_INCLUDE_DIR and PYTHON_LIBRARY based on

distutils environment variables for all versions of python, not just conda.

setup.py

@@ -505,8 +505,6 @@ class build(_build):
         # make sure build artifacts are generated for the version of Python currently running
         cmake_extra_arch = []
 
-        if 'conda' in sys.version:
-            # to support conda distribution
         from distutils.sysconfig import get_python_inc
         import distutils.sysconfig as sysconfig
         cmake_extra_arch += ['-DPYTHON_INCLUDE_DIR=' + get_python_inc()]