diff --git a/src/org/kde/kdeconnect/UserInterface/AppCompatPreferenceActivity.java b/src/org/kde/kdeconnect/UserInterface/AppCompatPreferenceActivity.java
deleted file mode 100644
index 5021878a..00000000
--- a/src/org/kde/kdeconnect/UserInterface/AppCompatPreferenceActivity.java
+++ /dev/null
@@ -1,117 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2014 The Android Open Source Project 
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-package org.kde.kdeconnect.UserInterface;
-
-import android.content.res.Configuration;
-import android.os.Bundle;
-import android.preference.PreferenceActivity;
-import android.view.MenuInflater;
-import android.view.View;
-import android.view.ViewGroup;
-
-import androidx.annotation.LayoutRes;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.appcompat.app.ActionBar;
-import androidx.appcompat.app.AppCompatDelegate;
-import androidx.appcompat.widget.Toolbar;
-
-/**
- * A {@link android.preference.PreferenceActivity} which implements and proxies the necessary calls
- * to be used with AppCompat.
- * <p>
- * This technique can be used with an {@link android.app.Activity} class, not just
- * {@link android.preference.PreferenceActivity}.
- */
-public abstract class AppCompatPreferenceActivity extends PreferenceActivity {
-
-    private AppCompatDelegate mDelegate;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        getDelegate().installViewFactory();
-        getDelegate().onCreate(savedInstanceState);
-        super.onCreate(savedInstanceState);
-    }
-
-    @Override
-    protected void onPostCreate(Bundle savedInstanceState) {
-        super.onPostCreate(savedInstanceState);
-        getDelegate().onPostCreate(savedInstanceState);
-    }
-
-    public ActionBar getSupportActionBar() {
-        return getDelegate().getSupportActionBar();
-    }
-
-    public void setSupportActionBar(@Nullable Toolbar toolbar) {
-        getDelegate().setSupportActionBar(toolbar);
-    }
-
-    @NonNull
-    @Override
-    public MenuInflater getMenuInflater() {
-        return getDelegate().getMenuInflater();
-    }
-
-    @Override
-    public void setContentView(@LayoutRes int layoutResID) {
-        getDelegate().setContentView(layoutResID);
-    }
-
-    @Override
-    public void setContentView(View view) {
-        getDelegate().setContentView(view);
-    }
-
-    @Override
-    public void setContentView(View view, ViewGroup.LayoutParams params) {
-        getDelegate().setContentView(view, params);
-    }
-
-    @Override
-    public void addContentView(View view, ViewGroup.LayoutParams params) {
-        getDelegate().addContentView(view, params);
-    }
-
-    @Override
-    protected void onPostResume() {
-        super.onPostResume();
-        getDelegate().onPostResume();
-    }
-
-    @Override
-    protected void onTitleChanged(CharSequence title, int color) {
-        super.onTitleChanged(title, color);
-        getDelegate().setTitle(title);
-    }
-
-    @Override
-    public void onConfigurationChanged(Configuration newConfig) {
-        super.onConfigurationChanged(newConfig);
-        getDelegate().onConfigurationChanged(newConfig);
-    }
-
-    @Override
-    protected void onDestroy() {
-        super.onDestroy();
-        getDelegate().onDestroy();
-    }
-
-    @Override
-    public void invalidateOptionsMenu() {
-        getDelegate().invalidateOptionsMenu();
-    }
-
-    private AppCompatDelegate getDelegate() {
-        if (mDelegate == null) {
-            mDelegate = AppCompatDelegate.create(this, null);
-        }
-        return mDelegate;
-    }
-
-
-}