Return enrollment consent status to caller.

Bug: 188847063
Test: adb shell am start -a android.settings.BIOMETRIC_ENROLL --ez require_consent true
Change-Id: I3285b379e175539c37355c67749c3d900e6ac62b

src/com/android/settings/biometrics/MultiBiometricEnrollHelper.java

@@ -20,7 +20,6 @@ import android.app.PendingIntent;
 import android.content.Intent;
 import android.hardware.face.FaceManager;
 import android.hardware.fingerprint.FingerprintManager;
-import android.util.Log;
 
 import androidx.annotation.NonNull;
 import androidx.fragment.app.FragmentActivity;
@@ -107,11 +106,4 @@ public class MultiBiometricEnrollHelper {
                     hardwareAuthToken, mGkPwHandle, mUserId);
         }));
     }
-
-    void onActivityResult(int requestCode, int resultCode, Intent data) {
-        Log.d(TAG, "RequestCode: " + requestCode + " resultCode: " + resultCode);
-        BiometricUtils.removeGatekeeperPasswordHandle(mActivity, mGkPwHandle);
-        mActivity.setResult(resultCode);
-        mActivity.finish();
-    }
 }