Remove last traces of has-emoji class (#11263)

Now that emojify.js has been removed, get rid of all instances of has-emoji class that was only used for that. Support for rendering shortcodes should remain in all of these places so it should still work the same.

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Lauris BH <lauris@nix.lv>

templates/explore/repo_list.tmpl

@@ -29,7 +29,7 @@
 				</div>
 			</div>
 			<div class="description">
-				{{if .DescriptionHTML}}<p class="has-emoji">{{.DescriptionHTML}}</p>{{end}}
+				{{if .DescriptionHTML}}<p>{{.DescriptionHTML}}</p>{{end}}
 				{{if .Topics }}
 					<div class="ui tags">
 					{{range .Topics}}