Document them but don't include them. Styleguide is currently written
for elements so it is rather strange.
Change-Id: I4c8bd18430d737445c14ac828d50a0844c456ca4
// Utilities
//
// Other things which effect the behaviour of components
-//
-// Styleguide 4.
// Flush left
//
// <label>Username <a href="#" class="mw-ui-flush-left">?</a></label>
// <input>
// </div>
-//
-// Styleguide 4.1.
.mw-ui-flush-left {
float: left;
margin-left: 0;
// <label>Username <a href="#" class="mw-ui-flush-right">?</a></label>
// <input>
// </div>
-//
-// Styleguide 4.2.
.mw-ui-flush-right {
float: right;
padding-right: 0;
// <div>
// <button class="mw-ui-center-block">click me</button>
// </div>
-//
-// Styleguide 4.3.
.mw-ui-center-block {
display: block;
margin-left: auto;