It was removed upstream in this commit: ce919b8180 (diff-335810e528842e1863df83d8f11332a3b8ae60a56cf2f8761a10f96b34bb5bbe)
ce919b8180 (diff-335810e528842e1863df83d8f11332a3b8ae60a56cf2f8761a10f96b34bb5bbe)