Remove currently unused code

Remove currently unused code

This code is currently unused and is contrary to the way in which we seem to be moving towards accomplishing this (i.e., device-specific optimization passes).

This is a partial revert of r13704 (First version of bitmap use tracking in SkPictureRecord - https://codereview.chromium.org/187833003/)

Committed: http://code.google.com/p/skia/source/detail?r=14179

[reed1, 2014-04-14 13:04:16]

lgtm

[robertphillips, 2014-04-14 13:23:30]

The CQ bit was checked by robertphillips@google.com

[commit-bot: I haz the power, 2014-04-14 13:23:41]

CQ is trying da patch. Follow status at
https://skia-tree-status.appspot.com/cq/robertphillips@google.com/237013002/1

[commit-bot: I haz the power, 2014-04-14 15:02:54]

Change committed as 14179