qos-scripts: replace modprobe by rmmod

modprobe -r is not available on all platforms, hence use rmmod

Signed-off-by: Manas Sambhus <manas.sambhus+github@gmail.com>

package/network/config/qos-scripts/files/usr/lib/qos/generate.sh

@@ -2,11 +2,10 @@
 [ -e /lib/functions.sh ] && . /lib/functions.sh || . ./functions.sh
 [ -x /sbin/modprobe ] && {
 	insmod="modprobe"
-	rmmod="$insmod -r"
 } || {
 	insmod="insmod"
-	rmmod="rmmod"
 }
+rmmod="rmmod"
 
 add_insmod() {
 	eval "export isset=\${insmod_$1}"