update hooks: clean old module packages

Some people have these old packages lying around, so clear them out
automatically so people don't have to manually recover.

BUG=chromium:396816
TEST=`./update_chroot` worked

Change-Id: Ida45e910fc1709790f4af65ed5b8d47f134022de
Reviewed-on: https://chromium-review.googlesource.com/210440
Reviewed-by: Steve Fung <stevefung@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
diff --git a/chroot_version_hooks.d/97_module-init-tools_cleanup b/chroot_version_hooks.d/97_module-init-tools_cleanup
new file mode 120000
index 0000000..2400a71
--- /dev/null
+++ b/chroot_version_hooks.d/97_module-init-tools_cleanup
@@ -0,0 +1 @@
+82_module-init-tools_cleanup
\ No newline at end of file