Remove 4.0 content for a deprecated 3.6 doc

advanced/search.rst

@@ -20,19 +20,6 @@ with ``()`` and ``AND``/``OR`` options::
 
    state.name: open AND (article.from:me OR article.from:somebody)
 
-.. note:: **🤓 Search phrases changed for Zammad 4.0**
-
-   With Zammad <=3.6 the following keys contained a string only: 
-
-      * group
-      * priority
-      * state
-      * organization
-
-   With Zammad >=4.0 these keys contain the whole object. This means you 
-   now have to add ``.name`` (e. g. ``group.name`` or ``priority.name``) 
-   to receive the same search results.
-
 
 Available attributes
 --------------------

advanced/suggested-workflows.rst

@@ -43,44 +43,3 @@ and the first available agent can assign herself
 to pick up where the sales rep left off.
 
 .. tip:: Be sure to leave notes with as much information as possible for the next agent!
-
-@mentions & the Subscribe Button
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Now suppose you’ve reassigned the ticket to customer service.
-You won’t receive notifications for this ticket anymore,
-but maybe this is a really important contract,
-and you want to make sure they have an A+ experience from start to finish.
-
-To enable notifications for a ticket that doesn’t belong to you,
-simply click the **Subscribe** button at the bottom of the ticket pane:
-
-.. figure:: /images/advanced/suggested-workflows/mention-subscribe-yourself-to-a-ticket.gif
-   :alt: Screencast of the Subscribe button feature
-   :width: 90%
-   :align: center
-
-   A list of all tickets you’re subscribed to
-   can be found in the **My mentioned Tickets** overview.
-
-Or, suppose you *don’t* want to reassign the ticket to customer service—you
-just have one quick question for them, and then you can take it from there.
-
-To start sending someone else notifications for your own ticket,
-type ``@@`` in the message composer and select their name from the pop-up menu:
-
-.. figure:: /images/advanced/suggested-workflows/mention-other-agents.gif
-   :alt: Screencast of the @mention feature
-   :width: 90%
-   :align: center
-
-   @mentioning a colleague in a message
-   will automatically subscribe them to your ticket.
-
-.. hint:: ⚙️ Check your :doc:`/extras/profile-and-settings` 
-   to customize how you receive notifications.
-
-.. note:: 😖 **A colleague @mentioned me, but I don’t see the ticket!**
-
-   Is the ticket assigned to a group that you don’t belong to?
-   @mentions and subscriptions only work for tickets that you already have access to.

index.rst

@@ -42,4 +42,3 @@ Zammad Agent Documentation
    /extras/profile-and-settings
    /extras/knowledge-base
    /extras/i-doit-track-company-property
-   /extras/github-gitlab-integration