[ticket/12734] Remove unnecessary error supressing

PHPBB3-12734
Merge pull request #2941 from Senky/ticket/12734

[ticket/12734] Custom profile manager should not suppress errors when inserting user rows

* Senky/ticket/12734:
  [ticket/12734] Remove unnecessary error supressing
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/12734] Remove unnecessary error supressing