Fix double scroll in branch dropdown (#9048)

* Fix double scroll in branch dropdown

* Revert of 425ae38aa9

* Changes in .less, generated new .css

* Revert unnecessary commented line

public/css/index.css

 .repository .owner.dropdown{min-width:40%!important}
 .repository #file-buttons{margin-left:auto!important;font-weight:400}
 .repository #file-buttons .ui.button{padding:8px 10px;font-weight:400}
-.repository .metas .menu{max-height:300px;overflow-x:auto}
+.repository .metas .menu{overflow-x:auto}
 .repository .metas .ui.list .hide{display:none!important}
 .repository .metas .ui.list .item{padding:0}
 .repository .metas .ui.list .label.color{padding:0 8px;margin-right:5px}

web_src/less/_repository.less

 
     .metas {
         .menu {
-            max-height: 300px;
             overflow-x: auto;
         }