Revert "releasetools: Use pattern filter when unzipping."

This reverts commit aa3a04f1.

Reason for revert: Some AOSP targets don't include RADIO/ in the TF.zip. We may possibly skip unzipping RADIO/, or by always creating a dummy RADIO folder in TF.zip. Revert this CL for now.

Change-Id: I8e90d322706a4fe82129bdfab5ffa1eab989c648