This macro is not defined, so we can kill all code that have the
"#ifdef LINGU_EXCEPTIONS". Just a cleanup, the rationale is the same.

Change-Id: Ib6f784859210d5a59210af51766ef4d7b8d7ead6
Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Reviewed-on: https://gerrit.libreoffice.org/778Tested-by: Caolán McNamara <caolanm@redhat.com>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>