remove obsolete/unneeded configuration entries

setup/webmail.sh

@@ -153,7 +153,6 @@ cat > ${RCM_PLUGIN_DIR}/carddav/config.inc.php <<EOF;
 <?php
 /* Do not edit. Written by Mail-in-a-Box. Regenerated on updates. */
 \$prefs['_GLOBAL']['hide_preferences'] = true;
-\$prefs['_GLOBAL']['suppress_version_warning'] = true;
 \$prefs['_GLOBAL']['pwstore_scheme'] = 'plain';
 \$prefs['ownCloud'] = array(
 	'name'         =>  'ownCloud',
@@ -166,8 +165,6 @@ cat > ${RCM_PLUGIN_DIR}/carddav/config.inc.php <<EOF;
 			'readonly'     =>  false,
 			'refresh_time' => '02:00:00',
 			'fixed'        =>  array('username','password'),
-			'preemptive_auth' => '1',
-			'hide'        =>  false,
 		],
 	],
 );