Remove could not invert matrix SkDebugfs

Change-Id: I547513b816bdbf58e7628ae3d50c2597b173537f
Reviewed-on: https://skia-review.googlesource.com/126080
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
5 files changed