If you don't have something that uniquely identifies each record, you can't select which one to delete. In other words, if you don't have a PRIMARY KEY in your (very badly named) TABLE then you can't do this easily.
If you do have a primary key, just SELECT it along with the other fields and *probably* PhpMyAdmin will be able to do it.
An optimist sees the glass as half full.
A pessimist sees the glass as half empty.
A realist drinks it no matter how much there is.