network-manager: S45network-manager: don't use pidof -o option

The pidof -o option is only available in the Busybox applet if
CONFIG_FEATURE_PIDOF_OMIT is enabled, and it isn't really needed here as the
init script isn't called 'NetworkManager', so get rid of it.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/network-manager/S45network-manager

@@ -8,7 +8,7 @@ NETWORKMANAGER_BIN=${sbindir}/NetworkManager
 
 [ -x $NETWORKMANAGER_BIN ] || exit 0
 
-PID=`pidof -o %PPID NetworkManager`
+PID=`pidof NetworkManager`
 case "$1" in
 	start)
 		echo -n "Starting NetworkManager ... "