revert bottom_toolbar_enabled to false

src/main/res/values/setup.xml

@@ -86,7 +86,7 @@
     <bool name="videos_enabled">false</bool>
 
     <!-- Bottom toolbar -->
-    <bool name="bottom_toolbar_enabled">true</bool>
+    <bool name="bottom_toolbar_enabled">false</bool>
 
     <!-- Help, imprint and feedback, and other things -->
     <bool name="fingerprint_enabled">true</bool>