Remove unnecessary parts and styles.

src/main/twirl/repo/branches.scala.html

@@ -5,7 +5,6 @@
 @import view.helpers._
 @html.main(s"${repository.owner}/${repository.name}", Some(repository)) {
   @html.menu("code", repository){
-    @tab(repository.repository.defaultBranch, repository, "branches", true)
     <h1>Branches</h1>
     <table class="table table-bordered">
       <tr>