Remove old debugger (it no longer builds)

This paves the way for removing more code from SkDebugCanvas

Change-Id: I6c634ae5c4d8d140e1079722275a117a5253d482
Reviewed-on: https://skia-review.googlesource.com/119012
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
36 files changed