Remove the user-specific agreement pages

We used to give users the right version of the agreement by guessing
their organisation from their email address.

Now we do it by looking at the organisation of the service they’re
looking at.

In other words, users should only be downloading the agreement as part
of the go live journey, not outside it. This is because we think that
users will get confused if they download the agreement and:
- find there’s nowhere to physically sign it
- think that accepting the agreement is all they need to do to go live

Maintaining two paths to download the agreement also makes the code more
complicated, and makes it harder to update the content on these pages.

app/templates/views/agreement/_agreement-signed.html

@@ -1,5 +1,5 @@
 <p>
-  Your organisation ({{ owner }}) has already accepted the GOV.UK
+  Your organisation ({{ current_service.organisation.name }}) has already accepted the GOV.UK
   Notify data sharing and financial agreement. You can
   <a href="{{ url_for('main.service_download_agreement', service_id=current_service.id) }}">download a copy</a>.
 </p>

app/templates/views/agreement/agreement.html

@@ -1,25 +0,0 @@
-{% extends "withoutnav_template.html" %}
-{% from "components/sub-navigation.html" import sub_navigation %}
-
-{% block per_page_title %}
-  GOV.UK Notify data sharing and financial agreement
-{% endblock %}
-
-{% block maincolumn_content %}
-
-<div class="grid-row">
-  <div class="column-one-third">
-    {{ sub_navigation(navigation_links) }}
-  </div>
-  <div class="column-two-thirds">
-
-    <h1 class="heading-large">
-      GOV.UK Notify data sharing and financial agreement
-    </h1>
-
-    {% include 'views/agreement/_agreement.html'%}
-
-  </div>
-</div>
-
-{% endblock %}

app/templates/views/terms-of-use.html

@@ -13,15 +13,6 @@
     These terms apply to your service’s use of GOV.UK Notify. You must be the service manager to accept them.
   </p>
 
-  <p>
-    {{ current_user.default_organisation.as_terms_of_use_paragraph(
-      terms_link=url_for('main.sign_in', next=url_for('main.terms')),
-      download_link=url_for('.agreement'),
-      support_link=url_for('.feedback', ticket_type='ask-question-give-feedback', body='agreement'),
-      signed_in=current_user.is_authenticated
-    )}}
-  </p>
-
   <h2 class="heading-medium">When using Notify</h2>
   <p>You must:</p>
   <ul class="list list-bullet">