Moving STATE_DISCONNECTED broadcast.

In Telecom we were seeing a bug where we received an
ACTION_CONNECTION_STATE_CHANGEDSTATE intent indicating the disconnection
of a bluetooth headset.  The BluetoothManager in Telecom would then
query the Bluetooth service to see if there are any devices.  Despite
being informed that the device in use was disconnected, it still showed
up as connected.

To fix this, I moved the state broadcast AFTER the disconnected device is
removed from the headset state machine.  Looking through all other
disconnect broadcasts in that file, the disconnection happens AFTER in
all other cases as well.

Bug: 17899941
Change-Id: Ice4b2a5b1093e04ffe4c3241a3379aba56898792