DOC: Update the signatures of `nested_iters` and `nditer.remove_axis`
DOC: Update the signatures of `nested_iters` and `nditer.remove_axis`

simongibbons/numpy,numpy/numpy,mattip/numpy,anntzer/numpy,seberg/numpy,simongibbons/numpy,rgommers/numpy,endolith/numpy,mhvk/numpy,charris/numpy,simongibbons/numpy,pdebuyl/numpy,simongibbons/numpy,mhvk/numpy,rgommers/numpy,rgommers/numpy,endolith/numpy,endolith/numpy,seberg/numpy,mattip/numpy,pdebuyl/numpy,jakirkham/numpy,rgommers/numpy,anntzer/numpy,jakirkham/numpy,charris/numpy,charris/numpy,numpy/numpy,endolith/numpy,mhvk/numpy,mattip/numpy,mattip/numpy,numpy/numpy,jakirkham/numpy,seberg/numpy,anntzer/numpy,simongibbons/numpy,charris/numpy,numpy/numpy,seberg/numpy,mhvk/numpy,pdebuyl/numpy,pdebuyl/numpy,mhvk/numpy,anntzer/numpy,jakirkham/numpy,jakirkham/numpy