Conclude the service search when the device is removed

When GATT service search is triggered on LTK derivation, bta_dm tries to connect over LE if LE ACL does not exists already. If the remote device is removed before LE ACL could be established, service search state is not reset. This blocks furthers requests for device or service discovery.

Change-Id: Ie080940179ba51edf3a223fbe3e896ef78c720cf
Test: Remove the bond within 30 seconds of pairing, try finding new devices
Bug: 281449565