Remove attempted py2/3 compat in _open_shelve, it didn't work
Remove attempted py2/3 compat in _open_shelve, it didn't work

dhomeier/astropy,kelle/astropy,aleksandr-bakanov/astropy,StuartLittlefair/astropy,lpsinger/astropy,StuartLittlefair/astropy,mhvk/astropy,lpsinger/astropy,lpsinger/astropy,DougBurke/astropy,tbabej/astropy,pllim/astropy,dhomeier/astropy,dhomeier/astropy,bsipocz/astropy,DougBurke/astropy,aleksandr-bakanov/astropy,pllim/astropy,DougBurke/astropy,funbaker/astropy,MSeifert04/astropy,joergdietrich/astropy,MSeifert04/astropy,tbabej/astropy,lpsinger/astropy,kelle/astropy,larrybradley/astropy,kelle/astropy,AustereCuriosity/astropy,aleksandr-bakanov/astropy,tbabej/astropy,funbaker/astropy,tbabej/astropy,funbaker/astropy,stargaser/astropy,StuartLittlefair/astropy,AustereCuriosity/astropy,larrybradley/astropy,astropy/astropy,saimn/astropy,tbabej/astropy,astropy/astropy,dhomeier/astropy,DougBurke/astropy,MSeifert04/astropy,mhvk/astropy,bsipocz/astropy,bsipocz/astropy,aleksandr-bakanov/astropy,saimn/astropy,joergdietrich/astropy,pllim/astropy,kelle/astropy,joergdietrich/astropy,mhvk/astropy,stargaser/astropy,AustereCuriosity/astropy,bsipocz/astropy,AustereCuriosity/astropy,dhomeier/astropy,astropy/astropy,joergdietrich/astropy,pllim/astropy,lpsinger/astropy,kelle/astropy,mhvk/astropy,larrybradley/astropy,astropy/astropy,stargaser/astropy,saimn/astropy,pllim/astropy,StuartLittlefair/astropy,larrybradley/astropy,saimn/astropy,saimn/astropy,StuartLittlefair/astropy,MSeifert04/astropy,larrybradley/astropy,AustereCuriosity/astropy,astropy/astropy,mhvk/astropy,stargaser/astropy,funbaker/astropy,joergdietrich/astropy