remove platform spefication for windows

Author: MariusCausemann

setup.py

@@ -49,10 +49,6 @@ def build_extension(self, ext):
         if platform.system() == "Windows":
             cmake_args += [
                 '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{}={}'.format(cfg.upper(), extdir)]
-            if os.environ.get('CMAKE_GENERATOR') != "NMake Makefiles":
-                if sys.maxsize > 2**32:
-                    cmake_args += ['-A', 'x64']
-                build_args += ['--', '/m']
         else:
             build_args += ['--', '-j2']