Merge "Revert of Revert of remove unused (by clients) SkPathUtils (patchset #1 id:1 of https://codereview.chromium.org/1060703003/)" into master-skia

https://skia.googlesource.com/skia/+/ca1a22ee534f0fcabed7fa06cbf3ea5068b489da

Change-Id: Ia9474ae4e998d3e843001f738fe25c835daddb26