[css-tables] Removed resolved issue

Author: FremyCompany

css-tables-3/Overview.bs

@@ -620,11 +620,6 @@ spec:css21; type:property; text:max-width
 			Finally, assign to the <a>table-root</a> element its correct number of rows and columns (from its mapped element),
 				and to each <a>table-cell</a> element its accurate table-row-start/table-column-start/table-row-span/table-column-span (from its mapped element).
 
-		<div class="issue">
-			The HTML specification mentions that in some cases, two cells may occupy the same row/column location.
-			We need to make sure this specification explains what happens in this case for layout/rendering.
-		</div>
-
 	<!--------------------------------------------------------------------------------->
 	<h3 id="missing-cells-fixup">Missing cells fixup</h3>