do not list former positions in header

Becuase in the case of people who have held multiple positions in
goverment it's going to be hard to pick the most relevant one so better
not to list them at all. This avoids user confusion about what they
should expect to see as it means it's either:

 * Current seat or position.
 * The last seat they held.

Fixes #1234
Fixes #1081

www/docs/mp/index.php

@@ -250,12 +250,6 @@
 // If this person has named non-committee offices, they override the default
 if (count($current_offices) > 0) {
     $position = $current_offices[0];
-} elseif (count($former_offices) > 0) {
-    # only use the position if it's current, i.e.
-    # it does not have an end date
-    if (!$former_offices[0]->to_date) {
-        $position = $former_offices[0];
-    }
 }
 
 // Finally, if this is a Votes page, replace the page description with