Remove the bar.newIconBg, cause its removed in ElvUI.

diff --git a/ElvUI_SLE/skins/blizzard/objectiveTracker.lua b/ElvUI_SLE/skins/blizzard/objectiveTracker.lua
index 88ce211..43207df 100644
--- a/ElvUI_SLE/skins/blizzard/objectiveTracker.lua
+++ b/ElvUI_SLE/skins/blizzard/objectiveTracker.lua
@@ -64,7 +64,6 @@ local function skinObjectiveBar(self, block, line)
 		bar.backdrop:Point("TOPLEFT", bar, -1, 1)
 		bar.backdrop:Point("BOTTOMRIGHT", bar, 1, -1)
 		bar:SetFrameStrata('HIGH')
-		bar.newIconBg:SetTemplate("NoBackdrop")

 		flare:Hide()