Remove unneeded check from 'frame'
Remove unneeded check from 'frame'

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