Remove passing spv2 expectations

As the gardener this week, I'm cleaning up some passing spv2 tests:
virtual/spv2/paint/paintlayer/non-self-painting-layer-overrides-visibility.html
virtual/spv2/paint/overflow/interest-rect-change-scroll-down.html
virtual/spv2/paint/invalidation/repaint-subsequence-on-ancestor-clip-change.html
virtual/spv2/paint/invalidation/invalidate-when-receiving-paint-layer.html

I verified each of these is all green on the flakiness dashboard.

BUG=524134, 536138, 461179
TBR=jbroman@chromium.org, trchen@chromium.org

Review URL: https://codereview.chromium.org/1696633002

Cr-Commit-Position: refs/heads/master@{#375112}
1 file changed