deletion of the thread posted by me

Hi,

I need to delete following  threads posted by me on postgreSQL forum,

Kindly suggest me a way forward as it is urgent.

http://www.postgresql.org/message-id/84BC7AB0D621A74893EC9C9E151293B022685CD6@ESESSMB207.ericsson.se

http://osdir.com/ml/postgresql-pgsql-general/2015-04/msg00543.html

http://postgresql.nabble.com/clearing-of-the-transactions-shown-in-pg-locks-td5847202.html

Regards

Mitu