Update resource list

Author: Autogenerator Pipeline

generator/resources.json

@@ -5,7 +5,6 @@
     "2020-01-01"
   ],
   "Microsoft.AVS/privateClouds": [
-    "2019-08-09-preview",
     "2020-03-20",
     "2020-07-17-preview"
   ],
@@ -14,7 +13,6 @@
     "2020-07-17-preview"
   ],
   "Microsoft.AVS/privateClouds/clusters": [
-    "2019-08-09-preview",
     "2020-03-20",
     "2020-07-17-preview"
   ],