workspace: remove pref saving calls
* saving of prefs will be done when shutting down, or asked by the user (cmd_saveAll)

(integrated from komodo (trunk) change 83500 by toddw)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@14149 b87d16e7-d29f-4ee1-b5ec-817d645d335f