Remove astropy import from setup.py
Remove astropy import from setup.py

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