Actually remove the old bluetooth hal

bluetooth/Android.bp

bluetooth/android.hardware.bluetooth@1.0-service.mtk.rc

bluetooth/async_fd_watcher.cc

bluetooth/async_fd_watcher.h

bluetooth/bluetooth_hci.cc

bluetooth/bluetooth_hci.h

bluetooth/h4_protocol.cc

bluetooth/h4_protocol.h

bluetooth/hci_internals.h

bluetooth/hci_packetizer.cc

bluetooth/hci_packetizer.h

bluetooth/hci_protocol.cc

bluetooth/hci_protocol.h

bluetooth/service.cc