[ticket/11201] Remove database column on update

PHPBB3-11201
Merge remote-tracking branch 'remotes/nickv/ticket/11201' into develop

# By Joas Schilling
# Via Joas Schilling
* remotes/nickv/ticket/11201:
  [ticket/11201] Remove database column on update
  [ticket/11201] Remove MSN/WLM fields