remove redundant string check
remove redundant string check

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