ccpr: Don't call calcCubicInverseTransposePowerBasisMatrix

We only need a few values from this Matrix, so it doesn't make sense to
spend time solving the entire thing.

Bug: skia:
Change-Id: Id56d6f593a9a5afe1455bf2c93f6a51b1b9f1642
Reviewed-on: https://skia-review.googlesource.com/122130
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
1 file changed