inc: remove safe_mkdir() because simplicity

src/etc/inc/openvpn.inc

@@ -1285,12 +1285,10 @@ function openvpn_refresh_crls() {
 	}
 }
 
-function openvpn_create_dirs() {
-	global $g;
-	if (!is_dir("{$g['varetc_path']}/openvpn"))
-		safe_mkdir("{$g['varetc_path']}/openvpn", 0750);
-	if (!is_dir("{$g['varetc_path']}/openvpn-csc"))
-		safe_mkdir("{$g['varetc_path']}/openvpn-csc", 0750);
+function openvpn_create_dirs()
+{
+	@mkdir('/var/etc/openvpn-csc', 0750);
+	@mkdir('/var/etc/openvpn', 0750);
 }
 
 function openvpn_get_interface_ip($ip, $mask) {

src/etc/inc/system.inc

@@ -1333,7 +1333,7 @@ function system_ntp_configure($start_ntpd = true)
 	$statsdir = '/var/log/ntp';
 	$gps_device = '/dev/gps0';
 
-	safe_mkdir($statsdir);
+	@mkdir($statsdir, 0755);
 
 	if (!is_array($config['ntpd'])) {
 		$config['ntpd'] = array();

src/etc/inc/util.inc

@@ -1279,19 +1279,6 @@ function return_dir_as_array($dir, $filter_regex = '') {
 	return $dir_array;
 }
 
-/*
- *    safe_mkdir($path, $mode = 0755)
- *    create directory if it doesn't already exist and isn't a file!
- */
-function safe_mkdir($path, $mode= 0755)
-{
-	if (!is_file($path) && !is_dir($path)) {
-		return @mkdir($path, $mode, true);
-	} else {
-		return false;
-	}
-}
-
 /*
  * get_sysctl($names)
  * Get values of sysctl OID's listed in $names (accepts an array or a single