90kernel-modules: remove unused variables in install()

The local variables in install() are unused, can be removed.

Cc: Harald Hoyer <harald@redhat.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>

modules.d/90kernel-modules/module-setup.sh

@@ -75,7 +75,6 @@ installkernel() {
 }
 
 install() {
-    local _f i
     [ -f /etc/modprobe.conf ] && dracut_install /etc/modprobe.conf
     dracut_install -o /{etc,lib}/modprobe.d/*.conf
     inst_hook cmdline 01 "$moddir/parse-kernel.sh"