AMBARI-7142. Configs: missing cursor pointer on dismiss.(XI WANG)

ambari-web/app/styles/application.less

@@ -5104,9 +5104,10 @@ ul.inline li {
 
     .icon-remove-circle {
       color: #ffffff;
-      padding-left: 10px;
-      padding-top: 7px;
+      margin-left: 10px;
+      margin-top: 0px;
       display: inline-block;
+      cursor: pointer;
     }
     .label-wrapper {
       line-height: 30px;