Reuse with_deleted for only_deleted

Applies changes suggested in #59 which did not apply correctly

lib/paranoia.rb

@@ -7,14 +7,14 @@ module Paranoia
   module Query
   module Query
     def paranoid? ; true ; end
     def paranoid? ; true ; end
 
 
-    def only_deleted
-      all.tap { |x| x.default_scoped = false }.where.not(deleted_at: nil)
-    end
-
     def with_deleted
     def with_deleted
       all.tap { |x| x.default_scoped = false }
       all.tap { |x| x.default_scoped = false }
     end
     end
 
 
+    def only_deleted
+      with_deleted.where.not(deleted_at: nil)
+    end
+
     def restore(id)
     def restore(id)
       if id.is_a?(Array)
       if id.is_a?(Array)
         id.map { |one_id| restore(one_id) }
         id.map { |one_id| restore(one_id) }