I have spent far too much time on this. I am trying to remove the Mass Subscriptions button from the Leads detail view. I have gone to /modules/Leads/metadata/detailviewdefs.php and commented out the following code:

5 =>
array (
'customCode' => '<input title="{$APP.LBL_MANAGE_SUBSCRIPTIONS}" class="button" onclick="this.form.return_module.value=\'Leads\'; this.form.return_action.value=\'DetailView\';this. form.return_id.value=\'{$fields.id.value}\'; this.form.action.value=\'Subscriptions\'; this.form.module.value=\'Campaigns\';" type="submit" name="Manage Subscriptions" value="{$APP.LBL_MANAGE_SUBSCRIPTIONS}">',
),

but that does not remove the button.

Any other suggestions?

Running Sugar 5.0.0f Community Edition.