compat-wireless: remove ath3k bt workaround

compat-wireless: remove ath3k bt workaround

This should be addressed now upstream properly through this
patch:

commit d9f51b51db2064c9049bf7924318fd8c6ed852cb
Author: Bala Shanmugam <sbalashanmugam@atheros.com>
Date:   Fri Feb 11 15:38:53 2011 +0530

    Bluetooth: Add firmware support for Atheros 3012

    Blacklisted AR3012 PID in btusb and added the same
    in ath3k to load patch and sysconfig files.

    Signed-off-by: Bala Shanmugam <sbalashanmugam@atheros.com>
    Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>