Remove getNodesInCommand debug method from Editing commands

Remove getNodesInCommand debug method from Editing commands

These methods appear to be for debugging and nothing ever calls them. It's a bit
strange to want a hash set of every node all commands in the hierachy touched
as well since they're not ordered so the set doesn't really tell you what the
command did anyway.

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=157191

[ojan, 2013-09-04 00:54:23]

lgtm

[commit-bot: I haz the power, 2013-09-04 00:54:49]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/esprehn@chromium.org/23739003/1

[eseidel, 2013-09-04 01:01:42]

lgtm

[commit-bot: I haz the power, 2013-09-04 04:42:09]

Change committed as 157191