Change record status: 
Project: 
Introduced in branch: 
8.x
Introduced in version: 
8.0.0
Description: 

The following classes have been removed from core (stark) they are still in classy, and can be used as normal. Classes used for javascript have been added with js- prefix

General classes:

.clearfix

Form classes:

.form-item
.form-required
.form-radios
.form-wrapper
.form-textarea-wrapper

.field-prefix
.field-suffix
.field-item
.field-items
.field
.field-[***]
.field-name-[***]
.field-type-[***]
.field-label-[***]

.fieldset-legend
.fieldset-wrapper

.inline
.description
.option
.date-time

.container-inline
.details-wrapper
.details-description

.form-textarea
.resize-[**]
.required

Region

.region
.region-content
.region-[***]

body

.user-logged-in
.path-frontpage
.path-[**]
.node--type-[***]

layout

.layout-container
.name-and-slogan
.site-name
.site-slogan
.layout-sidebar-first
.layout-sidebar-second

various

.item-list
.image-style-[***]
.marker
.active 
.odd
.even 
.empty 
.message
.indentation

.tabs 
.primary
.secondary
.menu 

.node-type-list

.messages
.messages--[***]
.messages__list
.messages__item

.pager
.pagination-heading
.pager__item 
.pager__item--first
.pager__item--previous
.pager__item--ellipsis
.is-active
.pager__item--last

.progress
.progress__label
.progress__track
.progress__percentage
.progress__description

js- prefix
classes added for existing javascript functionality to separate classes from the visual styling:

.js-indentation
.js-form-checkboxes
.js-form-wrapper
.js-form-required
.js-field-parent
.js-required 
.js-form-item
.js-form-submit

.js-progress__label 
.js-progress__bar
.js-progress__percentage
.js-progress__description
Impacts: 
Themers
Updates Done (doc team, etc.)
Online documentation: 
Not done
Theming guide: 
Not done
Module developer documentation: 
Not done
Examples project: 
Not done
Coder Review: 
Not done
Coder Upgrade: 
Not done
Other: 
Other updates done