remove unneeded Relation#all from AuthSource#authenticate

git-svn-id: http://svn.redmine.org/redmine/trunk@12593 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/auth_source.rb

@@ -77,7 +77,7 @@ class AuthSource < ActiveRecord::Base
 
   # Try to authenticate a user not yet registered against available sources
   def self.authenticate(login, password)
-    AuthSource.where(:onthefly_register => true).all.each do |source|
+    AuthSource.where(:onthefly_register => true).each do |source|
       begin
         logger.debug "Authenticating '#{login}' against '#{source.name}'" if logger && logger.debug?
         attrs = source.authenticate(login, password)