Removed planning hierarchy link from docs

doc/user/group/planning_hierarchy/index.md

@@ -5,7 +5,7 @@ group: Product Planning
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
-# Planning hierarchies **(FREE)**
+# Planning hierarchies **(PREMIUM)**
 
 Planning hierarchies are an integral part of breaking down your work in GitLab.
 To understand how you can use epics and issues together in hierarchies, remember the following:
@@ -20,21 +20,7 @@ To learn about hierarchies in general, common frameworks, and using GitLab for
 portfolio management, see
 [How to use GitLab for Agile portfolio planning and project management](https://about.gitlab.com/blog/2020/11/11/gitlab-for-agile-portfolio-planning-project-management/).
 
-## View planning hierarchies
-
-> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/340844/) in GitLab 14.8.
-
-To view the planning hierarchy in a project:
-
-1. On the top bar, select **Menu > Projects** and find your project.
-1. On the left sidebar, select **Project information > Planning hierarchy**.
-
-Under **Current structure**, you can see a hierarchy diagram that matches your current planning hierarchy.
-The work items outside your subscription plan show up below **Unavailable structure**.
-
-![Screenshot showing hierarchy page](img/view-project-work-item-hierarchy_v14_8.png)
-
-## Hierarchies with epics **(PREMIUM)**
+## Hierarchies with epics
 
 With epics, you can achieve the following hierarchy:
 
@@ -74,7 +60,7 @@ In an issue, you can view the parented epic above the issue in the right sidebar
 
 ![epics state dropdown](img/issue-view-parent-epic-in-sidebar_v14_6.png)
 
-## View ancestry of an epic **(PREMIUM)**
+## View ancestry of an epic
 
 In an epic, you can view the ancestors as parents in the right sidebar under **Ancestors**.