Revert of Set proper referrer for css resource fetching

LayoutTests/http/tests/css/resources/css-resources-referrer.css

Index: LayoutTests/http/tests/css/resources/css-resources-referrer.css
diff --git a/LayoutTests/http/tests/css/resources/css-resources-referrer.css b/LayoutTests/http/tests/css/resources/css-resources-referrer.css
deleted file mode 100644
index fe3a5e26ed8849d83ba4d1caacd50ad8a88d1a66..0000000000000000000000000000000000000000
--- a/LayoutTests/http/tests/css/resources/css-resources-referrer.css
+++ /dev/null
@@ -1,16 +0,0 @@
-@import url(css-resources-referrer-import.css);
-
-@font-face {
-    font-family: faceInSheet;
-    src: url('referrer-check.php?from=sheet&resource=font');
-}
-
-.imageInSheet {
-    background-image: url('referrer-check.php?from=sheet&resource=image');
-}
-.imageSetInSheet {
-    background-image: -webkit-image-set(
-        url('referrer-check.php?from=sheet&resource=image2') 1x,
-        url('referrer-check.php?from=sheet&resource=image') 2x
-    );
-}