Remove unwanted class

This was a typo, but the margin is not needed here anyway.

Author: MatMoore

manage_breast_screening/templates/wizard_step.jinja

@@ -93,7 +93,7 @@
   {% endif %}
 
   {% if cannot_continue_link %}
-    <p class="nhsuk-u-margin-top-x9"><a class="nhsuk-link nhsuk-link--no-visited-state" href="{{ cannot_continue_link.href }}">{{ cannot_continue_link.text }}</a></p>
+    <p><a class="nhsuk-link nhsuk-link--no-visited-state" href="{{ cannot_continue_link.href }}">{{ cannot_continue_link.text }}</a></p>
   {% endif %}
   </div>