Bug 1341102: Update test expectations for servo/servo#17587 r=me

MozReview-Commit-ID: BIbGXEkWBrp

layout/reftests/webkit-gradient/reftest.list

@@ -12,7 +12,7 @@ default-preferences pref(layout.css.prefixes.webkit,true)
 == webkit-gradient-linear-1b.html webkit-gradient-linear-1-ref.html
 == webkit-gradient-linear-1c.html webkit-gradient-linear-1-ref.html
 == webkit-gradient-linear-1d.html webkit-gradient-linear-1-ref.html
-fails-if(styloVsGecko||stylo) == webkit-gradient-linear-2.html webkit-gradient-linear-2-ref.html
+== webkit-gradient-linear-2.html webkit-gradient-linear-2-ref.html
 
 # Tests for -webkit-gradient(radial, ...)
 == webkit-gradient-radial-1a.html webkit-gradient-radial-1-ref.html