Removed unused Downcoder.chars.
Removed unused Downcoder.chars.

Unused -- other than as a local variable -- since its introduction in
953badbea5a04159adbfa970f5805c0232b6a401
manhhomienbienthuy/django,dsanders11/django,shaib/django,takis/django,django/django,atul-bhouraskar/django,apollo13/django,freakboy3742/django,elena/django,takis/django,ghickman/django,googleinterns/django,googleinterns/django,rsalmaso/django,atul-bhouraskar/django,manhhomienbienthuy/django,django/django,pauloxnet/django,koordinates/django,rsalmaso/django,solarissmoke/django,solarissmoke/django,monetate/django,atul-bhouraskar/django,monetate/django,felixxm/django,theo-l/django,felixxm/django,shaib/django,dsanders11/django,rsalmaso/django,koordinates/django,apollo13/django,auvipy/django,shaib/django,atul-bhouraskar/django,dsanders11/django,freakboy3742/django,wkschwartz/django,wkschwartz/django,googleinterns/django,blighj/django,theo-l/django,elena/django,dsanders11/django,freakboy3742/django,pauloxnet/django,adamchainz/django,monetate/django,MarkusH/django,monetate/django,elena/django,koordinates/django,ghickman/django,MarkusH/django,MarkusH/django,theo-l/django,apollo13/django,shaib/django,solarissmoke/django,blighj/django,rsalmaso/django,django/django,pauloxnet/django,googleinterns/django,ghickman/django,koordinates/django,blighj/django,pauloxnet/django,wkschwartz/django,adamchainz/django,django/django,auvipy/django,manhhomienbienthuy/django,solarissmoke/django,MarkusH/django,adamchainz/django,apollo13/django,ghickman/django,auvipy/django,auvipy/django,wkschwartz/django,theo-l/django,felixxm/django,takis/django,takis/django,blighj/django,manhhomienbienthuy/django,elena/django,adamchainz/django,felixxm/django