Do not display responsive scrollbar on small screen

The responsive tables have never a scrollbar so it is better to free the
vertical space.

sao/src/sao.less

@@ -1149,6 +1149,7 @@ input.column-boolean {
 
 @media screen and (max-width: @screen-xs-max) {
     .responsive.scrollbar {
+        display: none;
         > div {
             min-width: unset !important;
         }
@@ -1295,7 +1296,7 @@ input.column-boolean {
     overflow: auto;
 
     > div {
-        height: 1rem;
+        height: 5px;
     }
 }