diff --git a/layout/reftests/pixel-rounding/green-circle-with-blue-border.png b/layout/reftests/pixel-rounding/green-circle-with-blue-border.png
deleted file mode 100644
index 570fd24944a8..000000000000
Binary files a/layout/reftests/pixel-rounding/green-circle-with-blue-border.png and /dev/null differ
diff --git a/layout/reftests/pixel-rounding/image-high-quality-scaling-1-ref.html b/layout/reftests/pixel-rounding/image-high-quality-scaling-1-ref.html
deleted file mode 100644
index 62df7fa51163..000000000000
--- a/layout/reftests/pixel-rounding/image-high-quality-scaling-1-ref.html
+++ /dev/null
@@ -1,22 +0,0 @@
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diff --git a/layout/reftests/pixel-rounding/image-high-quality-scaling-1.html b/layout/reftests/pixel-rounding/image-high-quality-scaling-1.html
deleted file mode 100644
index e3d14a61f930..000000000000
--- a/layout/reftests/pixel-rounding/image-high-quality-scaling-1.html
+++ /dev/null
@@ -1,22 +0,0 @@
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diff --git a/layout/reftests/pixel-rounding/reftest.list b/layout/reftests/pixel-rounding/reftest.list
index 5dc55cde480c..5a775b41570f 100644
--- a/layout/reftests/pixel-rounding/reftest.list
+++ b/layout/reftests/pixel-rounding/reftest.list
@@ -123,10 +123,6 @@ fails == collapsed-border-top-6.html border-top-10-ref.html
== image-width-left-5.html image-width-5.html
== image-width-left-6.html image-width-6.html
-
-pref(image.high_quality_downscaling.enabled,true) == image-high-quality-scaling-1.html image-high-quality-scaling-1-ref.html
-
-
!= offscreen-0-ref.html offscreen-10-ref.html
== offscreen-background-color-pos-4.html offscreen-0-ref.html
== offscreen-background-color-pos-5.html offscreen-10-ref.html