Remove test for stddev, too
Remove test for stddev, too

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