[Settings] Remove redundant code.

Bug: 280236099
Test: make passed
Change-Id: I34e0632887ac38658761abd7d6a7e9f1e0f84bf1
diff --git a/src/com/android/settings/bluetooth/AdvancedBluetoothDetailsHeaderController.java b/src/com/android/settings/bluetooth/AdvancedBluetoothDetailsHeaderController.java
index 4679eb2..ebaa2fa 100644
--- a/src/com/android/settings/bluetooth/AdvancedBluetoothDetailsHeaderController.java
+++ b/src/com/android/settings/bluetooth/AdvancedBluetoothDetailsHeaderController.java
@@ -100,8 +100,6 @@
     @VisibleForTesting
     Handler mHandler = new Handler(Looper.getMainLooper());
     @VisibleForTesting
-    boolean mIsRegisterCallback = false;
-    @VisibleForTesting
     boolean mIsLeftDeviceEstimateReady;
     @VisibleForTesting
     boolean mIsRightDeviceEstimateReady;