Follow error prone recommendation

In btservice/RemoteDevices.java:
```
468: warning: Private method 'isCoordinatedSetMember' is never used.
        private boolean isCoordinatedSetMember() {
                        ^
651: warning: The local variable 'numUuids' is never read.
                            int numUuids = val.length / AbstractionLayer.BT_UUID_SIZE;
                                ^
140: warning: This assignment is to a static field.
Mutating static state from a constructor is highly error-prone.
        sAdapter = BluetoothAdapter.getDefaultAdapter();
                 ^
141: warning: This assignment is to a static field.
Mutating static state from a constructor is highly error-prone.
        sAdapterService = service;
                        ^
142: warning: This assignment is to a static field.
Mutating static state from a constructor is highly error-prone.
        sSdpTracker = new ArrayList<BluetoothDevice>();
                    ^
145: warning: It is very rare for LinkedList to out-perform ArrayList or ArrayDeque.
Avoid it unless you're willing to invest a lot of time into benchmarking.
        mDeviceQueue = new LinkedList<String>();
                       ^
192: warning: Method reset() annotated [none] but too narrow;
invokes method requiring {allOf=[android.permission.BLUETOOTH_CONNECT]}
                    if (bluetoothDevice.isConnected()) {
                                                   ^
197: warning: Broadcast annotated {allOf=[android.permission.BLUETOOTH_CONNECT]}
but protected with {allOf=[android.permission.BLUETOOTH]}
                        sAdapterService.sendBroadcast(intent, AdapterService.BLUETOOTH_PERM);
                                                     ^
397: warning: Parameter name `mBondState` is unknown. Did you mean newBondState?
         * @param mBondState the mBondState to set
           ^
853: warning: Method aclStateChangeCallback() annotated [none] but too narrow;
invokes method requiring {allOf=[android.permission.BLUETOOTH_CONNECT]}
                    + device.getBondState());
                                         ^
```

Bug: 236759221
Test: m RUN_ERROR_PRONE=true Bluetooth
Test: atest 'BluetoothInstrumentationTests:com.android.bluetooth.btservice.RemoteDevicesTest'
Merged-In: Ie3f35df29a81a5f55a28b63ce2c228eedd1f72f0
Change-Id: Ie3f35df29a81a5f55a28b63ce2c228eedd1f72f0