Bug 1426116 - Update the reftest annotations after we fixed the webrender box shadow problem (WR PR 2261). r=kats

MozReview-Commit-ID: K8FOj6WUlo9

--HG--
extra : rebase_source : fdd1c75ee57ac06c7d23b2e0c2b8e1d54f2c5432

layout/reftests/box-shadow/reftest.list

@@ -25,7 +25,7 @@ random-if(d2d) == boxshadow-threecorners.html boxshadow-threecorners-ref.html
 fuzzy(2,440) fails-if(webrender) == boxshadow-skiprect.html boxshadow-skiprect-ref.html
 == boxshadow-opacity.html boxshadow-opacity-ref.html
 == boxshadow-color-rounding.html boxshadow-color-rounding-ref.html
-fuzzy-if(webrender,1-1,7284-7284) == boxshadow-color-rounding-middle.html boxshadow-color-rounding-middle-ref.html
+== boxshadow-color-rounding-middle.html boxshadow-color-rounding-middle-ref.html
 fuzzy(3,500) fuzzy-if(d2d,2,1080) == boxshadow-border-radius-int.html boxshadow-border-radius-int-ref.html
 == boxshadow-inset-neg-spread.html about:blank
 == boxshadow-inset-neg-spread2.html boxshadow-inset-neg-spread2-ref.html