[css-backgrounds-4] Removed issue for order of 'border-*-radius' values

See w3c#8469

Author: SebastianZ

css-backgrounds-4/Overview.bs

@@ -285,11 +285,6 @@ The 'border-top-radius', 'border-right-radius',
 	and start-end, end-end for 'border-inline-end-radius'.
 	If the second value is omitted it is copied from the first.
 
-	<p class="issue">
-		Should the physical values all be defined as left to right and top to bottom
-		and the logical ones as start to end
-		or should they follow the clockwise order of ''border-radius''?
-
 <h4 id="corner-sizing-shorthand">
 Sizing All Corners At Once:
 The 'border-radius' shorthand</h4>