Bug 35285: Remove switch in notices.tt

Bug 35285: Remove switch in notices.tt

We now wrap appropriately for non-html formatted messages as
part of the html_content method. This means we can remove the
case from members/notices.tt and rely on html_content doing
the right thing for notice previews.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
(cherry picked from commit 74f9c57adfa2577cfcaff9ef1f92ee42a3d35451)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>