Bug 576777 - accessible/attributes/test_text.html mochitest fix

accessible/tests/mochitest/attributes/test_text.html

@@ -428,10 +428,8 @@
 
       ID = "area14";
       defAttrs = buildDefaultTextAttrs(ID, kInputFontSize);
+      attrs = { };
 
-      // XXX: While we expose text leaf accessibles for placeholder we grab its
-      // style, bug 545817.
-      attrs = { color: "rgb(109, 109, 109)" };
       testTextAttrs(ID, 0, attrs, defAttrs, 0, 0);
 
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