Fix unregisterScanner call in BluetoothLeScanner.

LE scanners were originally part of the GATT client, but were seperated
out and have their own registration API, so the BluetoothLeScanner call
to unregisterClient should be updated to call unregisterScanner.

Bug:75984723
Change-Id: I4c0543beb6d7b706cf75e78fcfb58480a6efd1d8
1 file changed