Remove leftover TODO without link

Author: introfog

src/test/java/com/itextpdf/html2pdf/css/grid/GridItemPlacementTest.java

@@ -114,7 +114,6 @@ public void rowStartEnd3Test() throws IOException, InterruptedException {
     }
 
     @Test
-    // TODO
     public void rowStartEnd4Test() throws IOException, InterruptedException {
         runTest("rowStartEnd4");
     }