Viewlets upgrade: no longer say how to make more of the table visible.

It should be fully visible now.

Author: mauritsvanrees

docs/backend/upgrading/version-specific-migration/upgrade-to-60.md

@@ -625,7 +625,6 @@ Plone 6.0 removes such references from the viewlet names to avoid confusion.
 The names in the following table have had the namespace `plone.` removed from them for display purposes only.
 In your code, you should use the object's `plone.` namespace as a prefix.
 This table shows the same information, but in tabular form.
-You can toggle navigation to make more of the table visible.
 
 ```{table} Viewlet changes from 5.2 to 6.0