Show correct "No" icon (#17537)

Author: delvh

templates/base/delete_modal_actions.tmpl

@@ -1,6 +1,6 @@
 <div class="actions">
 	<div class="ui red basic inverted cancel button">
-		{{svg "octicon-trash"}}
+		{{svg "octicon-x"}}
 		{{.i18n.Tr "modal.no"}}
 	</div>
 	<div class="ui green basic inverted ok button">