Revert since no longer displays version

User review: APK installer tells me the new and prev version of the app.It is really useful because I often install the same apk by mistake
i agree with review --> revert

Revert "CM-ify package installer"

This reverts commit 560ac3b0833ad4e73ed6b54d0c6285d87052f206.

Change-Id: I298ea485a919c92e8b4a0a55ab5c00e555b01158