Remove bootstrap util class from example

doc/development/fe_guide/style/scss.md

@@ -46,11 +46,6 @@ We recommend a "utility-first" approach.
 
 This encourages an organic growth of component classes and prevents the creation of one-off unreusable classes. Also, the kind of classes that emerge from "utility-first" tend to be design-centered (e.g. `.button`, `.alert`, `.card`) rather than domain-centered (e.g. `.security-report-widget`, `.commit-header-icon`).
 
-Examples of component classes that were created using "utility-first" include:
-
-- [`.circle-icon-container`](https://gitlab.com/gitlab-org/gitlab/blob/579fa8b8ec7eb38d40c96521f517c9dab8c3b97a/app/assets/stylesheets/framework/icons.scss#L85)
-- [`.d-flex-center`](https://gitlab.com/gitlab-org/gitlab/blob/900083d89cd6af391d26ab7922b3f64fa2839bef/app/assets/stylesheets/framework/common.scss#L425)
-
 Inspiration:
 
 - <https://tailwindcss.com/docs/utility-first/>