Remove code that was only used by the old debugger

Change-Id: I1035d9fa5f9888f3b6c332b16a0bde69f357a4a8
Reviewed-on: https://skia-review.googlesource.com/119144
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
9 files changed