Remove unnecessary css property (#5025)

app/javascript/styles/components.scss

@@ -2932,8 +2932,6 @@ button.icon-button.active i.fa-retweet {
 }
 
 .search__input {
-  padding-right: 30px;
-  color: $ui-secondary-color;
   outline: 0;
   box-sizing: border-box;
   display: block;