Bug 1437608 - Enable layout/reftests/bugs/1425243-1.html with WebRender. r=emilio

A try push indicates this is no longer fuzzy. Not sure what fixed it.

https://treeherder.mozilla.org/#/jobs?repo=try&revision=e67951b89d07137fc6a51385dcb424ebfc4e16d8

Differential Revision: https://phabricator.services.mozilla.com/D5739

--HG--
extra : moz-landing-system : lando

layout/reftests/bugs/reftest.list

@@ -2068,7 +2068,7 @@ test-pref(font.size.systemFontScale,200) == 1412743.html 1412743-ref.html
 == 1424177.html 1424177-ref.html
 == 1424680.html 1424680-ref.html
 == 1424798-1.html 1424798-ref.html
-fuzzy(0-74,0-2234) random-if(webrender) == 1425243-1.html 1425243-1-ref.html
+== 1425243-1.html 1425243-1-ref.html
 fuzzy-if(Android,0-66,0-574) fuzzy-if(d2d,0-89,0-777) fuzzy-if(!Android&&!d2d,0-1,0-31341) == 1425243-2.html 1425243-2-ref.html
 == 1430869.html 1430869-ref.html
 == 1432541.html 1432541-ref.html