The `--enable-api-cors` flag was deprecated in f3dd2db4ff7de1399a49af928cd3eae4fccf8764, and marked for removal in docker 17.09 through 85f92ef3590b386ea17e3948262725a2d3ce4db5. This patch removes the deprecated flag. Signed-off-by: Sebastiaan van Stijn <github@gone.nl> Upstream-commit: 7d4eab554379524c2421a7ecd3319d1d087d1de2 Component: engine