MAINT: cleanup ASTROPY_LT

Author: bsipocz

astroquery/utils/commons.py

@@ -36,9 +36,7 @@
 ASTROPY_LT_4_3 = not minversion('astropy', '4.3')
 ASTROPY_LT_5_0 = not minversion('astropy', '5.0')
 
-ASTROPY_LT_5_1 = not minversion('astropy', '5.1dev197')
-# Update the line above once 5.1 is released
-# ASTROPY_LT_5_1 = not minversion('astropy', '5.1')
+ASTROPY_LT_5_1 = not minversion('astropy', '5.1')
 
 
 def radius_to_unit(radius, unit='degree'):