Remove unused classes

app/views/errors/bad_request.html.erb

@@ -1,5 +1,5 @@
 <hgroup class="error-page__stamp">
-  <h1 class="error-page__title">400</h1>
+  <h1>400</h1>
   <h2>Bad request</h2>
   <hr />
   <div>Your request could not be understood by the server.</div>

app/views/errors/internal_server_error.html.erb

@@ -1,5 +1,5 @@
 <hgroup class="error-page__stamp">
-  <h1 class="error-page__title">500</h1>
+  <h1>500</h1>
   <h2>Internal server error</h2>
   <hr />
   <div>Something went wrong on our end; please try again later.</div>

app/views/errors/not_acceptable.html.erb

@@ -1,5 +1,5 @@
 <hgroup class="error-page__stamp">
-  <h1 class="error-page__title">406</h1>
+  <h1>406</h1>
   <h2>Not acceptable</h2>
   <hr />
   <div>The requested resource is not available in a format acceptable to your browser.</div>

app/views/errors/not_found.html.erb

@@ -1,5 +1,5 @@
 <hgroup class="error-page__stamp">
-  <h1 class="error-page__title">404</h1>
+  <h1>404</h1>
   <h2>Sorry, that page doesn’t exist!</h2>
   <hr />
   <div>You may have mistyped the address or the page may have moved.</div>

app/views/errors/unprocessable_entity.html.erb

@@ -1,5 +1,5 @@
 <hgroup class="error-page__stamp">
-  <h1 class="error-page__title">422</h1>
+  <h1>422</h1>
   <h2>Unprocessable entity</h2>
   <hr />
   <div>The server understands the request but was unable to process it.</div>