Remove obsolete vdc rule.

As of system/core commit 225459a5da21e9397ca49b0d9af7d5fe3462706b,
adbd no longer talks to vold. Remove the obsolete rule.

Bug: 12504045
Change-Id: I0a4f621afd8e5f8ab83219e7b0ff096c992d365f
1 file changed