remove unneeded import
remove unneeded import

pllim/astropy,dhomeier/astropy,saimn/astropy,aleksandr-bakanov/astropy,lpsinger/astropy,larrybradley/astropy,saimn/astropy,larrybradley/astropy,pllim/astropy,larrybradley/astropy,dhomeier/astropy,mhvk/astropy,MSeifert04/astropy,StuartLittlefair/astropy,aleksandr-bakanov/astropy,stargaser/astropy,aleksandr-bakanov/astropy,astropy/astropy,MSeifert04/astropy,mhvk/astropy,astropy/astropy,astropy/astropy,astropy/astropy,pllim/astropy,MSeifert04/astropy,mhvk/astropy,StuartLittlefair/astropy,dhomeier/astropy,mhvk/astropy,saimn/astropy,stargaser/astropy,lpsinger/astropy,lpsinger/astropy,StuartLittlefair/astropy,mhvk/astropy,larrybradley/astropy,lpsinger/astropy,stargaser/astropy,pllim/astropy,aleksandr-bakanov/astropy,MSeifert04/astropy,saimn/astropy,dhomeier/astropy,astropy/astropy,lpsinger/astropy,larrybradley/astropy,dhomeier/astropy,pllim/astropy,stargaser/astropy,StuartLittlefair/astropy,saimn/astropy,StuartLittlefair/astropy