TST, MAINT: hausdorff test cleanups
TST, MAINT: hausdorff test cleanups

* use `assert_allclose` instead of `assert_almost_equal`
for more consistent floating point comparisons per the
NumPy documentation:
https://numpy.org/doc/stable/reference/generated/numpy.testing.assert_almost_equal.html

* replace `assert_` with plain `assert` now that we use
`pytest` consistently

endolith/scipy,Eric89GXL/scipy,rgommers/scipy,e-q/scipy,mdhaber/scipy,Stefan-Endres/scipy,perimosocordiae/scipy,endolith/scipy,WarrenWeckesser/scipy,rgommers/scipy,perimosocordiae/scipy,andyfaff/scipy,anntzer/scipy,WarrenWeckesser/scipy,grlee77/scipy,perimosocordiae/scipy,mdhaber/scipy,anntzer/scipy,tylerjereddy/scipy,grlee77/scipy,Stefan-Endres/scipy,vigna/scipy,grlee77/scipy,grlee77/scipy,ilayn/scipy,anntzer/scipy,perimosocordiae/scipy,endolith/scipy,endolith/scipy,vigna/scipy,rgommers/scipy,scipy/scipy,scipy/scipy,zerothi/scipy,e-q/scipy,Stefan-Endres/scipy,rgommers/scipy,perimosocordiae/scipy,e-q/scipy,e-q/scipy,Stefan-Endres/scipy,andyfaff/scipy,scipy/scipy,endolith/scipy,rgommers/scipy,andyfaff/scipy,scipy/scipy,ilayn/scipy,ilayn/scipy,vigna/scipy,scipy/scipy,zerothi/scipy,andyfaff/scipy,Eric89GXL/scipy,zerothi/scipy,zerothi/scipy,Stefan-Endres/scipy,ilayn/scipy,tylerjereddy/scipy,Eric89GXL/scipy,anntzer/scipy,anntzer/scipy,anntzer/scipy,mdhaber/scipy,e-q/scipy,tylerjereddy/scipy,ilayn/scipy,scipy/scipy,zerothi/scipy,matthew-brett/scipy,WarrenWeckesser/scipy,vigna/scipy,endolith/scipy,ilayn/scipy,grlee77/scipy,WarrenWeckesser/scipy,matthew-brett/scipy,andyfaff/scipy,tylerjereddy/scipy,Eric89GXL/scipy,perimosocordiae/scipy,WarrenWeckesser/scipy,mdhaber/scipy,zerothi/scipy,Stefan-Endres/scipy,mdhaber/scipy,Eric89GXL/scipy,vigna/scipy,mdhaber/scipy,Eric89GXL/scipy,WarrenWeckesser/scipy,matthew-brett/scipy,andyfaff/scipy,matthew-brett/scipy,matthew-brett/scipy,tylerjereddy/scipy