Printer list items have wrong width.

1. There was leftover code in the printers adapter that was
   hard coding the item width with no reason to do so.

2. Changed the icon view visibility to invisible to allow
   the text of all list items including save to PDF and all
   printers to be left aligned.

bug:11225340

Change-Id: I5b51d0d30577699f5cd73c7c58521358653d135b