use androidx imports instead of jetbrains

Signed-off-by: alperozturk96 <alper_ozturk@proton.me>

Author: alperozturk96

app/src/main/java/com/owncloud/android/ui/fragment/OCFileListFragment.java

@@ -120,7 +120,6 @@
 import org.greenrobot.eventbus.EventBus;
 import org.greenrobot.eventbus.Subscribe;
 import org.greenrobot.eventbus.ThreadMode;
-import org.jetbrains.annotations.NotNull;
 
 import java.io.File;
 import java.util.ArrayList;
@@ -255,7 +254,7 @@ public void onCreate(Bundle savedInstanceState) {
     }
 
     @Override
-    public void onViewCreated(@NotNull View view, @org.jetbrains.annotations.Nullable Bundle savedInstanceState) {
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
         listenSetupEncryptionDialogResult();
     }