Remove setCompositingLayersNeedRebuild call in RenderLayer::styleChanged

This call isn't need anymore. Now setNeedsToUpdateAncestorDependentProperties
does this work.

BUG=332248

Review URL: https://codereview.chromium.org/319863004

git-svn-id: svn://svn.chromium.org/blink/trunk@175716 bbb929c8-8fbe-4397-9dbb-9b2b20218538