[test] Update big-line and remove XFAIL

Now that we use polygon clipping, output geometry should no longer exceed
the 2^16 limits imposed by pixman. For the image backend, we now use spans
for stroking and for the xlib backend we have to double check the range on
the output trapezoids. In short, cairo should pass this test.

1 files changed, 0 insertions, 0 deletions

diff --git a/test/big-line.quartz.ref.png b/test/big-line.quartz.ref.png
deleted file mode 100644
index b8dfe8b97..000000000
--- a/test/big-line.quartz.ref.png
+++ /dev/null