Bug 14077: Remove unused AUTH_UPDATE_FAILED from moremember.tt

Bug 14077: Remove unused AUTH_UPDATE_FAILED from moremember.tt

'AUTH_UPDATE_FAILED' in moremember.tt is never set and should be removed (see comment #6 on Bug 13910).

To verify: git grep 'AUTH_UPDATE_FAILED'
Result: Only one occurence (in moremember.tt)

Test plan:
- Apply patch (on top of Bug 13910)
- Verify that the part with AUTH_UPDATE_FAILED is removed from moremember.tt
- Go to a patron's detail page and verify that nothing is broken (Home > Patrons > Patrons details for...)

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
This has been introduced by
  commit 1a91801b06607ee9e5f8c21d531a7b7a3ca3b683
  Date:   Sat Dec 1 20:56:27 2007 -0600
      Add Staff member type. Add permissions checks for bug# 1269
      and related permissions on memberentry and mods.
But was already not used...

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>