Remove ‘branch’ functionality from themes.trac.wordpress.org

As reported by #3686-meta the theme ‘Branches’ is appearing as a special item in the code browser.

Could the following rules be added to wp-themes/conf/trac.ini under [svn] to disable Trac’s default svn structure handling which we don’t use on that instance?
branches=
tags=

(I’ve tested that this works as expected under a local trac)

#prio3 #trac

#3686-meta