Adding 14.6 removals to Docs

data/removals/14_6/limit_trigger_pipelines.yml

+- name: "Limit the number of triggered pipeline to 25K in free tier"
+  removal_date: Dec 22, 2021 # day the removal was released
+  removal_milestone: "14.6"
+  reporter: dhershkovitch # GitLab username of the person reporting the removal
+  body: |
+    A large amount of triggered pipelines in a single project impacts the performance of GitLab.com. In GitLab 14.6, we are limiting the number of triggered pipelines in a single project on GitLab.com at any given moment to 25,000. This change applies to projects in the free tier only, Premium and Ultimate are not affected by this change.

data/removals/14_6/removal-release-cli-s3.yml

+- name: "Release CLI distributed as a generic package"
+  removal_date: Dec 22, 2021 # day the removal was released
+  removal_milestone: "14.6"
+  reporter: kbychu # GitLab username of the person reporting the removal
+  body: |
+    The [release-cli](https://gitlab.com/gitlab-org/release-cli) will be released as a [generic package](https://gitlab.com/gitlab-org/release-cli/-/packages) starting in GitLab 14.2. We will continue to deploy it as a binary to S3 until GitLab 14.5 and stop distributing it in S3 in GitLab 14.6.

doc/update/removals.md

@@ -388,3 +388,13 @@ In GitLab 14.3, we will remove the ability to filter by `name` in the [list proj
 The support for [`gitlab_pages['use_legacy_storage']` setting](https://docs.gitlab.com/ee/administration/pages/index.html#domain-source-configuration-before-140) in Omnibus installations has been removed.
 
 In 14.0 we removed [`domain_config_source`](https://docs.gitlab.com/ee/administration/pages/index.html#domain-source-configuration-before-140) which had been previously deprecated, and allowed users to specify disk storage. In 14.0 we added `use_legacy_storage` as a **temporary** flag to unblock upgrades, and allow us to debug issues with our users and it was deprecated and communicated for removal in 14.3.
+
+## 14.6
+
+### Limit the number of triggered pipeline to 25K in free tier
+
+A large amount of triggered pipelines in a single project impacts the performance of GitLab.com. In GitLab 14.6, we are limiting the number of triggered pipelines in a single project on GitLab.com at any given moment to 25,000. This change applies to projects in the free tier only, Premium and Ultimate are not affected by this change.
+
+### Release CLI distributed as a generic package
+
+The [release-cli](https://gitlab.com/gitlab-org/release-cli) will be released as a [generic package](https://gitlab.com/gitlab-org/release-cli/-/packages) starting in GitLab 14.2. We will continue to deploy it as a binary to S3 until GitLab 14.5 and stop distributing it in S3 in GitLab 14.6.