layout: Drop theme attribute from toolbar

Conflicts with DynamicTheme in dark mode

Signed-off-by: Aayush Gupta <aayushgupta219@gmail.com>

app/src/main/res/layout/fragment_favourite.xml

@@ -29,7 +29,6 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:minHeight="?attr/actionBarSize"
-        android:theme="?attr/actionBarTheme"
         app:menu="@menu/menu_import_export"
         app:navigationIcon="@drawable/ic_arrow_back"
         app:title="@string/title_favourites_manager" />
@@ -44,4 +43,4 @@
         app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
         tools:listitem="@layout/view_app_list"
         app:stackFromEnd="false" />
-</RelativeLayout>
+</RelativeLayout>