Clean up whitespace in removals yamls

To get yamllint to start scanning these files,
we need to fix all the whitespace warnings
and errors

data/removals/14_0/removal-sidekiq_experimental_queue_selector.yml

@@ -7,5 +7,3 @@
     GitLab supports a [queue selector](https://docs.gitlab.com/ee/administration/operations/extra_sidekiq_processes.html#queue-selector) to run only a subset of background jobs for a given process. When it was introduced, this option had an 'experimental' prefix (`experimental_queue_selector` in Omnibus, `experimentalQueueSelector` in Helm charts).
 
     As announced in the [13.6 release post](https://about.gitlab.com/releases/2020/11/22/gitlab-13-6-released/#sidekiq-cluster-queue-selector-configuration-option-has-been-renamed), the 'experimental' prefix is no longer supported. Instead, `queue_selector` for Omnibus and `queueSelector` in Helm charts should be used.
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data/removals/14_0/removal_ci_project_config_path.yml

@@ -9,4 +9,3 @@
 
     If you are using `CI_PROJECT_CONFIG_PATH` in your pipeline configurations,
     please update them to use `CI_CONFIG_PATH` instead.
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data/removals/14_0/removal_enablement_pg11.yml

@@ -7,5 +7,3 @@
     PostgreSQL 12 will be the minimum required version in GitLab 14.0. It offers [significant improvements](https://www.postgresql.org/about/news/postgresql-12-released-1976/) to indexing, partitioning, and general performance benefits.
 
     Starting in GitLab 13.7, all new installations default to version 12. From GitLab 13.8, single-node instances are automatically upgraded as well. If you aren't ready to upgrade, you can [opt out of automatic upgrades](https://docs.gitlab.com/omnibus/settings/database.html#opt-out-of-automatic-postgresql-upgrades).
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data/removals/14_0/removal_enablement_ubuntu_16.yml

@@ -7,6 +7,3 @@
     Ubuntu 16.04 [reached end-of-life in April 2021](https://ubuntu.com/about/release-cycle), and no longer receives maintenance updates. We strongly recommend users to upgrade to a newer release, such as 20.04.
 
     GitLab 13.12 will be the last release with Ubuntu 16.04 support.
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data/removals/14_0/removal_runner_25555.yml

@@ -5,4 +5,3 @@
   breaking_change: true
   body: |
     In GitLab Runner 13.0, [issue #5069](https://gitlab.com/gitlab-org/gitlab-runner/-/issues/5069), we introduced new timing options for the GitLab Docker Machine executor. In GitLab Runner 14.0, we have removed the old configuration option, [off peak time mode](https://docs.gitlab.com/runner/configuration/autoscale.html#off-peak-time-mode-configuration-deprecated).
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data/removals/14_0/verify-ci-removal-parametertrace.yml

@@ -5,5 +5,3 @@
   breaking_change: true
   body: |
    GitLab Runner was updated in GitLab 13.4 to internally stop passing the `trace` parameter to the `/api/jobs/:id` endpoint. GitLab 14.0 deprecates the `trace` parameter entirely for all other requests of this endpoint. Make sure your [GitLab Runner version matches your GitLab version](https://docs.gitlab.com/runner/#gitlab-runner-versions) to ensure consistent behavior.
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