no longer needed, and possibly misleading - hopefully, nobody else has
used it yet; also refactor getAxes() and remove annoying
backwards-compatibility stuff in it, it probably didn't help anything
and prevents one from using getAxes() in the obvious way


git-svn-id: https://flot.googlecode.com/svn/trunk@310 1e0a6537-2640-0410-bfb7-f154510ff394