Revert "qcom: Select Sony display/media variants for Sony devices"

1. The Sony kernel is no longer BF64-based.
2. There is no reason for Sony devices to set
   the BOARD_USES_QCOM_HARDWARE flag, since they
   are meant to be using AOSP code + select patches.

Revert for now until a better solution is decided upon.

This reverts commit be202afa.

Change-Id: I94749d116340e9eb4a2fcc88a2b4514719e2279d