Remove special handling of com.android.art.debug/release

The whitelistedApexAvailable used to map references to
com.android.art.debug/release to com.android.art before looking it up
in the white list. This change removed that mapping and simply added
both to the white list.

Bug: 142935992
Test: m nothing
Change-Id: Ibad76fb73988688eb303e056197986ee9a6119ae
Merged-In: Ibad76fb73988688eb303e056197986ee9a6119ae