Remove unnecessary assert

I added this during the refactor https://skia-review.googlesource.com/c/skia/+/706216
but it appears that it can happen in certain circumstances

Test-Ubuntu18-Clang-Golo-GPU-QuadroP400-x86_64-Debug-All-PreAbandonGpuContext
-> gl gm  localmatrix_order

Change-Id: I21b6e7a51841e1c4c0ef9543d2a3117e894dfdec
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/709156
Auto-Submit: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Eric Boren <borenet@google.com>
1 file changed