Make add service page much simpler

We reckon that most of the text on this page wasn’t helping.

app/templates/views/add-service.html

@@ -15,25 +15,6 @@
       When people receive notifications, who should they be from?
     </h1>
 
-    <p>
-      Be specific to your service. Remember that there might be
-      other people in your organisation using GOV.UK Notify.
-    </p>
-
-    <p>
-      Users will see this:
-    </p>
-
-    <ul class="list-bullet bottom-gutter">
-      <li>
-        at the start of every text message, eg ‘Vehicle tax: we received your
-        payment, thank you’
-      </li>
-      <li>
-        as your email sender name
-      </li>
-    </ul>
-
     <form autocomplete="off" method="post">
 
       {{ textbox(form.name, hint="You can change this later") }}