fix: app license overview

frontend/app/src/app/modules/about/about-licenses.scss

@@ -12,24 +12,6 @@
  * You should have received a copy of the GNU General Public License along with
  * this program. If not, see <https://www.gnu.org/licenses/>.
  */
-ion-content > div {
-  height: 100%;
-}
-
-cdk-virtual-scroll-viewport {
-  width: 100%;
-  height: 100%;
-}
-
-:host ::ng-deep {
-  .cdk-virtual-scroll-content-wrapper {
-    width: 100%;
-  }
-}
-
-.virtual-scroll-expander {
-  clear: both;
-}
 
 .supertext-icon {
   height: 14px;