Replace astropy's catch_warnings with warnings.catch_warnings
Replace astropy's catch_warnings with warnings.catch_warnings

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