Delete keys if SMP over BR fails

BluetoothBondStateMachine is stuck in pending command state if SMP over
BR fails. This is because the stack incorrectly thinks this is a HID
device and does not remove the incomplete keys which inturn avoids
bta_dm from sending a callback to BondStateMachine.

Bug: 222409893
Test: gd/cert/run
Tag: #refactor

Change-Id: I0a5df3829644d58a972673bb4b00bb2684c74577
(cherry picked from commit a800f32f)