May adapter: none is removed from the latest snapcraft

Author: hsbt

snap/local/snapcraft.yaml.erb

@@ -19,28 +19,20 @@ environment:
 apps:
   env:
     command: bin/env
-    adapter: none
   ruby:
     command: bin/ruby
-    adapter: none
   irb:
     command: bin/irb
-    adapter: none
   rdoc:
     command: bin/rdoc
-    adapter: none
   ri:
     command: bin/ri
-    adapter: none
   gem:
     command: bin/gem
-    adapter: none
   rake:
     command: bin/rake
-    adapter: none
   bundle:
     command: bin/bundle
-    adapter: none
 
 parts:
   ruby: