CLN: remove redundant mac wheel-build code (#24644)

Author: robbuckley

setup.py

@@ -401,20 +401,6 @@ def run(self):
 cmdclass.update({'clean': CleanCommand,
  'build': build})
 
-try:
- from wheel.bdist_wheel import bdist_wheel
-
- class BdistWheel(bdist_wheel):
- def get_tag(self):
- tag = bdist_wheel.get_tag(self)
- repl = 'macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64'
- if tag[2] == 'macosx_10_6_intel':
- tag = (tag[0], tag[1], repl)
- return tag
- cmdclass['bdist_wheel'] = BdistWheel
-except ImportError:
- pass
-
 if cython:
  suffix = '.pyx'
  cmdclass['build_ext'] = CheckingBuildExt