Kill trailing whitespace in ruby files

app/logical/moderator/dashboard/queries/comment.rb

@@ -6,20 +6,20 @@ module Moderator
 
         def self.all(min_date, max_level)
           sql = <<-EOS
-            SELECT comment_votes.comment_id, count(*) 
-            FROM comment_votes 
-            JOIN comments ON comments.id = comment_id 
-            JOIN users ON users.id = comments.creator_id 
-            WHERE 
-              comment_votes.created_at > ? 
-              AND comments.score < 0 
-              AND users.level <= ? 
-            GROUP BY comment_votes.comment_id 
+            SELECT comment_votes.comment_id, count(*)
+            FROM comment_votes
+            JOIN comments ON comments.id = comment_id
+            JOIN users ON users.id = comments.creator_id
+            WHERE
+              comment_votes.created_at > ?
+              AND comments.score < 0
+              AND users.level <= ?
+            GROUP BY comment_votes.comment_id
             HAVING count(*) >= 3
-            ORDER BY count(*) DESC 
+            ORDER BY count(*) DESC
             LIMIT 10
           EOS
-          
+
           ActiveRecord::Base.select_all_sql(sql, min_date, max_level).map {|x| new(x)}
         end