Fix the logic for removing bonded devices

* Removed btif_storage_is_device_bonded(), because it is not needed,
  and it was giving the wrong answer in use cases like Smart Setup
  with BR/EDR connections.

* Added a call to btif_storage_remove_ble_bonding_keys()
  within btif_storage_remove_bonded_device() so the bonded device
  state is properly removed.

* Don't save the BLE bonding keys if it is temporary bonding

Bug: 22233299
Change-Id: I33d9f76a124acc60173f0acaa517bc29ee6603e8