Fix linting issues

Author: icc-guerrero

android/src/main/java/com/incomingcall/UnlockScreenActivity.java

@@ -17,7 +17,6 @@
 import java.util.List;
 import java.util.Timer;
 import java.util.TimerTask;
-
 import android.app.Activity;
 
 import androidx.appcompat.app.AppCompatActivity;
@@ -48,7 +47,6 @@ public class UnlockScreenActivity extends AppCompatActivity implements UnlockScr
     private static Activity fa;
     private Timer timer;
 
-
     @Override
     public void onStart() {
         super.onStart();