Remove ‘active’ title on team page

This section of the page is covered by the ‘Team members’ `<h1>`.

Only the invited users is a special case that needs its own title.

app/assets/stylesheets/views/users.scss

@@ -1,6 +1,7 @@
 .user-list {
 
   @include core-16;
+  margin-bottom: $gutter * 1.5;
 
   &-item {
 

app/templates/views/manage-users.html

@@ -17,7 +17,7 @@ Manage users – GOV.UK Notify
 
 {% block maincolumn_content %}
 
-  <div class="grid-row">
+  <div class="grid-row bottom-gutter">
     <div class="column-two-thirds">
       <h1 class="heading-large">
         Team members
@@ -30,7 +30,7 @@ Manage users – GOV.UK Notify
     {% endif %}
   </div>
 
-  <h2 class="heading-medium">
+  <h2 class="visually-hidden">
     Active
   </h2>
   <div class="user-list">