Reformat code

app/src/main/java/com/hippo/ehviewer/ui/CommonOperations.java

@@ -21,8 +21,6 @@ import android.content.Intent;
 import android.os.Build;
 
 import androidx.core.content.ContextCompat;
-import androidx.fragment.app.FragmentActivity;
-import androidx.lifecycle.LifecycleKt;
 
 import com.hippo.app.ListCheckBoxDialogBuilder;
 import com.hippo.ehviewer.EhApplication;