MAINT: Remove six.with_metaclass from benchmarks/cython_special.py
MAINT: Remove six.with_metaclass from benchmarks/cython_special.py

https://realpython.com/python-metaclasses
https://six.readthedocs.io/#six.with_metaclass
zerothi/scipy,endolith/scipy,pizzathief/scipy,endolith/scipy,endolith/scipy,grlee77/scipy,nmayorov/scipy,andyfaff/scipy,andyfaff/scipy,anntzer/scipy,scipy/scipy,perimosocordiae/scipy,aeklant/scipy,vigna/scipy,vigna/scipy,WarrenWeckesser/scipy,perimosocordiae/scipy,scipy/scipy,pizzathief/scipy,e-q/scipy,aeklant/scipy,WarrenWeckesser/scipy,endolith/scipy,arokem/scipy,WarrenWeckesser/scipy,ilayn/scipy,perimosocordiae/scipy,arokem/scipy,perimosocordiae/scipy,scipy/scipy,mdhaber/scipy,andyfaff/scipy,vigna/scipy,ilayn/scipy,pizzathief/scipy,rgommers/scipy,perimosocordiae/scipy,e-q/scipy,person142/scipy,andyfaff/scipy,scipy/scipy,matthew-brett/scipy,anntzer/scipy,scipy/scipy,tylerjereddy/scipy,tylerjereddy/scipy,mdhaber/scipy,zerothi/scipy,endolith/scipy,zerothi/scipy,Eric89GXL/scipy,mdhaber/scipy,aeklant/scipy,person142/scipy,scipy/scipy,mdhaber/scipy,matthew-brett/scipy,nmayorov/scipy,WarrenWeckesser/scipy,arokem/scipy,anntzer/scipy,anntzer/scipy,grlee77/scipy,anntzer/scipy,perimosocordiae/scipy,andyfaff/scipy,vigna/scipy,matthew-brett/scipy,Stefan-Endres/scipy,zerothi/scipy,pizzathief/scipy,nmayorov/scipy,nmayorov/scipy,vigna/scipy,grlee77/scipy,ilayn/scipy,rgommers/scipy,ilayn/scipy,grlee77/scipy,person142/scipy,tylerjereddy/scipy,Eric89GXL/scipy,Eric89GXL/scipy,WarrenWeckesser/scipy,matthew-brett/scipy,person142/scipy,nmayorov/scipy,Eric89GXL/scipy,ilayn/scipy,arokem/scipy,tylerjereddy/scipy,endolith/scipy,WarrenWeckesser/scipy,Stefan-Endres/scipy,pizzathief/scipy,Eric89GXL/scipy,mdhaber/scipy,aeklant/scipy,matthew-brett/scipy,grlee77/scipy,tylerjereddy/scipy,ilayn/scipy,andyfaff/scipy,zerothi/scipy,Stefan-Endres/scipy,e-q/scipy,e-q/scipy,rgommers/scipy,mdhaber/scipy,rgommers/scipy,Stefan-Endres/scipy,arokem/scipy,zerothi/scipy,person142/scipy,Stefan-Endres/scipy,e-q/scipy,aeklant/scipy,anntzer/scipy,Stefan-Endres/scipy,Eric89GXL/scipy,rgommers/scipy