[css-color-5][editorial] wpt cleanup

Author: svgeesus

css-color-5/Overview.bs

@@ -2981,8 +2981,6 @@ No new privacy considerations have been reported on this specification.
 			t422-rgba-func-no-mixed-f.xht
 			t422-rgba-func-pct-a.xht
 			t422-rgba-func-whitespace-b.xht
-			t422-rgba-onscreen-b.xht
-			t422-rgba-onscreen-multiple-boxes-c.xht
 			t422-rgba-values-meaning-b.xht
 			t423-transparent-1-a.xht
 			t423-transparent-2-a.xht
@@ -3008,8 +3006,6 @@ No new privacy considerations have been reported on this specification.
 			t425-hsla-basic-a.xht
 			t425-hsla-clip-outside-device-gamut-b.xht
 			t425-hsla-h-rotating-b.xht
-			t425-hsla-onscreen-b.xht
-			t425-hsla-onscreen-multiple-boxes-c.xht
 			t425-hsla-parsing-f.xht
 			t425-hsla-values-b.xht
 			t43-svg-keywords-a.xht