open extension settings in main browser

packages/flutter_mozilla_components/android/src/main/res/layout/activity_add_on_settings.xml

@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?><!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:fitsSystemWindows="true">
-
-    <androidx.fragment.app.FragmentContainerView
-        android:id="@+id/addonSettingsContainer"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent" />
-
-</androidx.constraintlayout.widget.ConstraintLayout>

packages/flutter_mozilla_components/android/src/main/res/layout/fragment_add_on_settings.xml

@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-
-<androidx.coordinatorlayout.widget.CoordinatorLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_height="match_parent">
-
-    <mozilla.components.concept.engine.EngineView
-        tools:ignore="Instantiatable"
-        android:id="@+id/addonSettingsEngineView"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent" />
-
-</androidx.coordinatorlayout.widget.CoordinatorLayout>