Delete leftover kernel update hooks

src/ostree/kernel/15_ostree_remove

@@ -1,11 +0,0 @@
-#!/bin/sh
-
-version=$1
-
-if [ -z "$version" ]; then
-    echo "$0: kernel version required"
-    exit 1
-fi
-
-rm -fR "/ostree/modules/${version}"
-rm -fR "/boot/initramfs-ostree-${version}.img"

src/ostree/kernel/15_ostree_update

@@ -1,10 +0,0 @@
-#!/bin/sh
-
-version=$1
-
-if [ -z "$version" ]; then
-    echo "$0: kernel version required"
-    exit 1
-fi
-
-ostree admin update-kernel /ostree/current/ ${version}