remove 8.1 and 8.2

Author: mongoKart

config/redirects

@@ -1,6 +1,6 @@
 define: prefix docs/entity-framework
 define: base https://www.mongodb.com/${prefix}
-define: versions v7.0 v8.0 v8.1 v8.2 master
+define: versions v7.0 v8.0 master
 
 raw: ${prefix}/ -> ${base}/current/
 raw: ${prefix}/stable -> ${base}/current/