disable OpenMP on OSX again

setup.py

@@ -18,10 +18,10 @@ python_module_link_args = []
 
 if sys.platform == 'darwin':
     import distutils.sysconfig
-    extra_compile_args += ['--stdlib=libc++', '-mmacosx-version-min=10.9', '-openmp']
+    extra_compile_args += ['--stdlib=libc++', '-mmacosx-version-min=10.9']
     vars = distutils.sysconfig.get_config_vars()
     vars['LDSHARED'] = vars['LDSHARED'].replace('-bundle', '')
-    python_module_link_args+=['-bundle', '-openmp']
+    python_module_link_args+=['-bundle']
 else:
     extra_compile_args += ['-DPOCKETFFT_OPENMP', '-fopenmp', '-Wfatal-errors', '-Wfloat-conversion' ,'-Wsign-conversion', '-Wconversion' ,'-W', '-Wall', '-Wstrict-aliasing=2', '-Wwrite-strings', '-Wredundant-decls', '-Woverloaded-virtual', '-Wcast-qual', '-Wcast-align', '-Wpointer-arith']
     python_module_link_args += ['-march=native', '-Wl,-rpath,$ORIGIN', '-fopenmp']