Always use Skia reduceOpsTaskSplitting

This feature was previously limited to high-end devices, but now that
there is a fallback when VRAM is limited, it will be enabled globally.

After the feature is rolled out to all major Skia clients, it will be
the only way things work.

Bug: 183612348
Change-Id: Ia99ec154b498ab9315ec5f5285241fde8136c4ab