init: Remove grep usage

The only downside is on systems where devtmpfs is not enabled
will see and error message, anyway /dev will be tmpfs as fallback like now.

Signed-off-by: Dave Reisner <dreisner@archlinux.org>

init

@@ -8,8 +8,7 @@ PATH=/usr/sbin:/usr/bin:/sbin:/bin
 
 mount -t proc proc /proc -o nosuid,noexec,nodev
 mount -t sysfs sys /sys -o nosuid,noexec,nodev
-if grep -q devtmpfs /proc/filesystems; then
-  mount -n -t devtmpfs udev /dev -o mode=0755,size=10M,nosuid
+if mount -n -t devtmpfs udev /dev -o mode=0755,size=10M,nosuid; then
   devtmpfs_mounted=1
 else
   mount -n -t tmpfs udev /dev -o mode=0755,size=10M,nosuid