Ok, I'm not sure on how to disable the community itself, but I will look into it, so if someone gets to it before I do, by all means, post the solution.
If you're trying to remove just the link, in your navbar template find:
<if condition="$show['communitylink'] AND $show['popups']">
<td class="vbmenu_control"><a id="community" href="$show[nojs_link]#community" rel="nofollow" accesskey="6">$vbphrase[community]</a> <script type="text/javascript"> vbmenu_register("community"); </script></td>
<else />
Replace that with:
<if condition="$show['popups']">
Still in your navbar template, find and remove:
<if condition="$show['communitylink']">
<!-- community link menu -->
<div class="vbmenu_popup" id="community_menu" style="display:none;margin-top:3px" align="$stylevar[left]">
<table cellpadding="4" cellspacing="1" border="0">
<tr><td class="thead">$vbphrase[community_links]</td></tr>
$template_hook[navbar_community_menu_start]
<if condition="$show['quick_links_groups']">
<tr><td class="vbmenu_option"><a href="group.php$session[sessionurl_q]">$vbphrase[social_groups]</a></td></tr>
</if>
<if condition="$show['quick_links_albums']">
<tr><td class="vbmenu_option"><a href="album.php$session[sessionurl_q]">$vbphrase[pictures_and_albums]</a></td></tr>
</if>
<if condition="$bbuserinfo['userid']">
<tr><td class="vbmenu_option"><a href="profile.php?$session[sessionurl]do=buddylist"><if condition="$show['friends_and_contacts']">$vbphrase[contacts_and_friends]<else />$vbphrase[contacts]</if></a></td></tr>
</if>
<if condition="$show['memberslist']">
<tr><td class="vbmenu_option"><a href="memberlist.php$session[sessionurl_q]">$vbphrase[members_list]</a></td></tr>
</if>
$template_hook[navbar_community_menu_end]
</table>
</div>
<!-- / community link menu -->