Kill trailing whitespace in ruby files

app/models/ip_ban.rb

@@ -5,19 +5,19 @@ class IpBan < ActiveRecord::Base
   validates_presence_of :reason, :creator, :ip_addr
   validates_format_of :ip_addr, :with => IP_ADDR_REGEX
   validates_uniqueness_of :ip_addr, :if => lambda {|rec| rec.ip_addr =~ IP_ADDR_REGEX}
-  
+
   def self.is_banned?(ip_addr)
     exists?(["ip_addr = ?", ip_addr])
   end
-  
+
   def self.search(params)
     q = scoped
     return q if params.blank?
-    
+
     if params[:ip_addr].present?
       q = q.where("ip_addr = ?", params[:ip_addr])
     end
-    
+
     q
   end
 
@@ -26,7 +26,7 @@ class IpBan < ActiveRecord::Base
     notes = count_by_ip_addr("note_versions", user_ids, "updater_id", "updater_ip_addr")
     pools = count_by_ip_addr("pool_versions", user_ids, "updater_id", "updater_ip_addr")
     wiki_pages = count_by_ip_addr("wiki_page_versions", user_ids, "updater_id", "updater_ip_addr")
-    
+
     return {
       "comments" => comments,
       "notes" => notes,
@@ -34,11 +34,11 @@ class IpBan < ActiveRecord::Base
       "wiki_pages" => wiki_pages
     }
   end
-  
+
   def self.count_by_ip_addr(table, user_ids, user_id_field = "user_id", ip_addr_field = "ip_addr")
     select_all_sql("SELECT #{ip_addr_field}, count(*) FROM #{table} WHERE #{user_id_field} IN (?) GROUP BY #{ip_addr_field} ORDER BY count(*) DESC", user_ids)
   end
-  
+
   def initialize_creator
     self.creator_id = CurrentUser.id
   end