Run the below script to get notifications from FMC and delete the ones that you want
1) OmniQuery.pl -db mdb -e "select status,category,hex(uuid),body from notification where status=11;"
2) OmniQuery.pl -db mdb -e 'delete from notification where uuid=unhex("<insert the uuid that the first command returns here");'
3) OmniQuery.pl -db mdb -e "select status,category,hex(uuid),body from notification where status=11;"
